Android趣味计算器

系统的主要功能
1.登录验证功能
2.注册账号功能
3.计算及显示结果功能
4.演奏乐曲功能
5.播放乐曲功能

代码:
MainActivity.java

package com.example.dell.myapplication;import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;import com.example.dell.myapplication.Main2Activity;public class MainActivity extends AppCompatActivity {private EditText zh;private EditText mm;private Button denglu;private Button zhuce;boolean if_login=false;ContentResolver resolver;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();setonclick();}private void setonclick() {//注册zhuce.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent in=new Intent(MainActivity.this,Main2Activity.class);startActivity(in);}});//登录denglu.setOnClickListener(new View.OnClickListener() {private String zh1;private String mm1;@Overridepublic void onClick(View v) {// TODO Auto-generated method stubUri uri=Uri.parse("content://com.example.dell.myapplication.provider/user");resolver=getContentResolver();Cursor cursor = resolver.query(uri, null, null, null, null);while(cursor.moveToNext()){zh1 = cursor.getString(cursor.getColumnIndex("zh"));mm1= cursor.getString(cursor.getColumnIndex("mm"));if(zh1.equals(zh.getText().toString())&&mm1.equals(mm.getText().toString())&&if_login==false){Toast.makeText(MainActivity.this,"登录成功",Toast.LENGTH_SHORT).show();Intent in=new Intent(MainActivity.this,Main3Activity.class);finish();if_login=true;startActivity(in);}else if (if_login==false){Toast.makeText(MainActivity.this, "账号或者密码错误", Toast.LENGTH_SHORT).show();}}}});}private void initView() {zh = (EditText) findViewById(R.id.zh);mm = (EditText) findViewById(R.id.mm);denglu = (Button) findViewById(R.id.denglu);zhuce = (Button) findViewById(R.id.zhuce);}
}

Main2Activity.java

package com.example.dell.myapplication;import android.content.ContentResolver;import android.content.ContentValues;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;import com.example.dell.myapplication.MainActivity;import com.example.dell.myapplication.R;public class Main2Activity extends AppCompatActivity {private EditText zh;private EditText mm;private EditText twomm;private Button zhuce;ContentResolver resolver;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main2);initView();zhuce.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {String name1=zh.getText().toString();String pwd1=mm.getText().toString();String pwd2=twomm.getText().toString();if(name1.equals("")||pwd1.equals("")||pwd2.equals("")){Toast.makeText(Main2Activity.this, "有没写的值", Toast.LENGTH_SHORT).show();}if(pwd1.equals(pwd2)){//放入contentreselover(name1,pwd1);Toast.makeText(Main2Activity.this, "注册成功", Toast.LENGTH_SHORT).show();Intent in=new Intent(Main2Activity.this,MainActivity.class);finish();startActivity(in);}else{Toast.makeText(Main2Activity.this, "密码与确认密码不符", Toast.LENGTH_SHORT).show();}}});}private void reselover(String zh,String mm) {Uri uri=Uri.parse("content://com.example.dell.myapplication.provider");resolver=getContentResolver();ContentValues cv=new ContentValues();cv.put("zh",zh);cv.put("mm",mm);resolver.insert(uri, cv);}private void initView() {zh = (EditText) findViewById(R.id.zh);mm = (EditText) findViewById(R.id.mm);twomm= (EditText) findViewById(R.id.twomm);zhuce = (Button) findViewById(R.id.zhuce);}}

Main3Activity

package com.example.dell.myapplication;import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.support.v7.app.AppCompatActivity;
import android.content.IntentFilter;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.example.dell.myapplication.MusicService;
import com.example.dell.myapplication.MusicService2;
import com.example.dell.myapplication.Music;public class Main3Activity extends AppCompatActivity implements View.OnClickListener {private Music utils;Button btn_0, btn_1, btn_2, btn_3, btn_4, btn_5,btn_6, btn_7, btn_8, btn_9, btn_equal,btn_point, btn_clean, btn_del, btn_plus,btn_minus, btn_multiply, btn_divide;EditText et_input;boolean clear_flag;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main3);utils = new Music(getApplicationContext());btn_0 = (Button) findViewById(R.id.btn_0);btn_1 = (Button) findViewById(R.id.btn_1);btn_2 = (Button) findViewById(R.id.btn_2);btn_3 = (Button) findViewById(R.id.btn_3);btn_4 = (Button) findViewById(R.id.btn_4);btn_5 = (Button) findViewById(R.id.btn_5);btn_6 = (Button) findViewById(R.id.btn_6);btn_7 = (Button) findViewById(R.id.btn_7);btn_8 = (Button) findViewById(R.id.btn_8);btn_9 = (Button) findViewById(R.id.btn_9);btn_clean = (Button) findViewById(R.id.btn_clean);btn_equal = (Button) findViewById(R.id.btn_equal);btn_minus = (Button) findViewById(R.id.btn_minus);btn_multiply = (Button) findViewById(R.id.btn_multiplay);btn_plus = (Button) findViewById(R.id.btn_plus);btn_point = (Button) findViewById(R.id.btn_point);btn_del = (Button) findViewById(R.id.btn_del);btn_divide = (Button) findViewById(R.id.btn_divide);et_input = (EditText) findViewById(R.id.et_input);btn_0.setOnClickListener(this);btn_1.setOnClickListener(this);btn_2.setOnClickListener(this);btn_3.setOnClickListener(this);btn_4.setOnClickListener(this);btn_5.setOnClickListener(this);btn_6.setOnClickListener(this);btn_7.setOnClickListener(this);btn_8.setOnClickListener(this);btn_9.setOnClickListener(this);btn_equal.setOnClickListener(this);btn_minus.setOnClickListener(this);btn_multiply.setOnClickListener(this);btn_divide.setOnClickListener(this);btn_del.setOnClickListener(this);btn_point.setOnClickListener(this);btn_plus.setOnClickListener(this);btn_clean.setOnClickListener(this);et_input.setOnClickListener(this);final Intent intent=new Intent(Main3Activity.this, MusicService.class);}@Overridepublic void onClick(View v) {String str = et_input.getText().toString();switch (v.getId()) {case R.id.btn_0:case R.id.btn_1:case R.id.btn_2:case R.id.btn_3:case R.id.btn_4:case R.id.btn_5:case R.id.btn_6:case R.id.btn_7:case R.id.btn_8:case R.id.btn_9:case R.id.btn_point:if (clear_flag) {clear_flag = false;str = "";et_input.setText("");}int w = Integer.parseInt(((Button) v).getText().toString())-1;if(w>=0&&w<=6)utils.soundPlay(w);et_input.setText(str + ((Button) v).getText());break;case R.id.btn_plus:case R.id.btn_minus:case R.id.btn_multiplay:case R.id.btn_divide:if (clear_flag) {clear_flag = false;str = "";et_input.setText("");}et_input.setText(str + " " + ((Button) v).getText() + " ");break;case R.id.btn_clean:clear_flag = false;et_input.setText("");break;case R.id.btn_del:if (clear_flag) {clear_flag = false;et_input.setText("");} else if (str != null && !str.equals("")) {et_input.setText(str.substring(0, str.length() - 1));}case R.id.btn_equal:getResult();send();break;default:break;}}private void getResult() {String exp = et_input.getText().toString();if(exp==null||exp.equals("")){return;}if(!exp.contains(" ")){return;}if(clear_flag){clear_flag=false;return ;}clear_flag = true;double result = 0;String s1 = exp.substring(0, exp.indexOf(" "));String op = exp.substring(exp.indexOf(" ") + 1, exp.indexOf(" ") + 2);String s2 = exp.substring(exp.indexOf(" ") + 3);if (!s1.equals("") && !s2.equals("")) {double d1 = Double.parseDouble(s1);double d2 = Double.parseDouble(s2);if (op.equals("+")) {result = d1 + d2;} else if (op.equals("-")) {result = d1 - d2;} else if (op.equals("*")) {result = d1 * d2;} else if (op.equals("/")) {if (d2 == 0) {result = 0;} else {result = d1 / d2;}}if (result==61){final Intent intent=new Intent(Main3Activity.this,MusicService.class);startService(intent);}else if(result!=61){final Intent intent=new Intent(Main3Activity.this,MusicService.class);stopService(intent);}if (result==520||result==521){final Intent intent2=new Intent(Main3Activity.this,MusicService2.class);startService(intent2);}else if(result!=520&&result!=521){final Intent intent2=new Intent(Main3Activity.this,MusicService2.class);stopService(intent2);}if (result==1001){final Intent intent3=new Intent(Main3Activity.this,MusicService3.class);startService(intent3);}else if(result!=1001){final Intent intent3=new Intent(Main3Activity.this,MusicService3.class);stopService(intent3);}if (!s1.contains(".") && !s2.contains(".") && !op.equals("/")) {int r = (int) result;et_input.setText(r + "");} else {et_input.setText(result + "");}}else if(!s1.equals("")&&s2.equals("")){et_input.setText(exp);}else if(s1.equals("")&&!s2.equals("")){double d2=Double.parseDouble(s2);if(op.equals("+")){result=0+d2;}else if(op.equals("-")){result=0-d2;}else if(op.equals("*")){result=0;}else if(op.equals("/")){result = 0;}if(!s2.contains(".")){int r=(int) result;et_input.setText(r+" ");} else{et_input.setText(result+" ");}}else{et_input.setText("");}}public void send(){String content=et_input.getText().toString();Intent intent=new Intent();intent.setAction("com.example.dell.myapplication_broadcastreceiver.zk");intent.putExtra("content",content);sendBroadcast(intent);}
}

Music.java

package com.example.dell.myapplication;/*** 音乐播放帮助类*/import android.content.Context;
import android.media.AudioManager;
import android.media.SoundPool;import java.util.HashMap;public class Music {// 资源文件int Music[] = {R.raw.do1, R.raw.re2, R.raw.mi3, R.raw.fa4, R.raw.sol5,R.raw.la6, R.raw.si7};SoundPool soundPool;HashMap<Integer, Integer> soundPoolMap;public Music(Context context) {soundPool = new SoundPool(2, AudioManager.STREAM_MUSIC, 100);soundPoolMap = new HashMap<Integer, Integer>();for (int i = 0; i < Music.length; i++) {soundPoolMap.put(i, soundPool.load(context, Music[i], 1));}}public int soundPlay(int no) {return soundPool.play(soundPoolMap.get(no), 100, 100, 1, 0, 1.0f);}@Overrideprotected void finalize() throws Throwable {soundPool.release();super.finalize();}
}

MusicService.java

package com.example.dell.myapplication;import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.widget.Toast;import java.io.IOException;public class MusicService extends Service {private boolean isReady;private MediaPlayer mediaPlayer=null;public MusicService() {}@Overridepublic void onCreate() {super.onCreate();mediaPlayer=MediaPlayer.create(this, R.raw.child);if(mediaPlayer==null){return;}mediaPlayer.stop();mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener(){@Overridepublic boolean onError(MediaPlayer mediaPlayer,int i,int i1){mediaPlayer.release();stopSelf();return false;}});try{mediaPlayer.prepare();isReady=true;}catch(IOException e){e.printStackTrace();isReady=false;}}@Overridepublic int onStartCommand(Intent intent,   int flags, int startId) {if(isReady&&!mediaPlayer.isPlaying()){mediaPlayer.start();Toast.makeText(this,"开始播放音乐",Toast.LENGTH_SHORT).show();}return  START_STICKY;}@Overridepublic void onDestroy() {if(mediaPlayer!=null){if (mediaPlayer.isPlaying()){mediaPlayer.stop();}mediaPlayer.release();Toast.makeText(this,"停止播放音乐",Toast.LENGTH_SHORT).show();}}@Overridepublic IBinder onBind(Intent intent) {// TODO: Return the communication channel to the service.//throw new UnsupportedOperationException("Not yet implemented");return null;}
}

MusicService2

package com.example.dell.myapplication;import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.widget.Toast;import java.io.IOException;public class MusicService2 extends Service {private boolean isReady;private MediaPlayer mediaPlayer=null;public MusicService2() {}@Overridepublic void onCreate() {super.onCreate();mediaPlayer=MediaPlayer.create(this, R.raw.love);if(mediaPlayer==null){return;}mediaPlayer.stop();mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener(){@Overridepublic boolean onError(MediaPlayer mediaPlayer,int i,int i1){mediaPlayer.release();stopSelf();return false;}});try{mediaPlayer.prepare();isReady=true;}catch(IOException e){e.printStackTrace();isReady=false;}}@Overridepublic int onStartCommand(Intent intent,   int flags, int startId) {if(isReady&&!mediaPlayer.isPlaying()){mediaPlayer.start();Toast.makeText(this,"开始播放音乐",Toast.LENGTH_SHORT).show();}return  START_STICKY;}@Overridepublic void onDestroy() {if(mediaPlayer!=null){if (mediaPlayer.isPlaying()){mediaPlayer.stop();}mediaPlayer.release();Toast.makeText(this,"停止播放音乐",Toast.LENGTH_SHORT).show();}}@Overridepublic IBinder onBind(Intent intent) {// TODO: Return the communication channel to the service.//throw new UnsupportedOperationException("Not yet implemented");return null;}
}

MusicService3.java

package com.example.dell.myapplication;import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.widget.Toast;import java.io.IOException;public class MusicService2 extends Service {private boolean isReady;private MediaPlayer mediaPlayer=null;public MusicService2() {}@Overridepublic void onCreate() {super.onCreate();mediaPlayer=MediaPlayer.create(this, R.raw.love);if(mediaPlayer==null){return;}mediaPlayer.stop();mediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener(){@Overridepublic boolean onError(MediaPlayer mediaPlayer,int i,int i1){mediaPlayer.release();stopSelf();return false;}});try{mediaPlayer.prepare();isReady=true;}catch(IOException e){e.printStackTrace();isReady=false;}}@Overridepublic int onStartCommand(Intent intent,   int flags, int startId) {if(isReady&&!mediaPlayer.isPlaying()){mediaPlayer.start();Toast.makeText(this,"开始播放音乐",Toast.LENGTH_SHORT).show();}return  START_STICKY;}@Overridepublic void onDestroy() {if(mediaPlayer!=null){if (mediaPlayer.isPlaying()){mediaPlayer.stop();}mediaPlayer.release();Toast.makeText(this,"停止播放音乐",Toast.LENGTH_SHORT).show();}}@Overridepublic IBinder onBind(Intent intent) {// TODO: Return the communication channel to the service.//throw new UnsupportedOperationException("Not yet implemented");return null;}
}

Provider.java

package com.example.dell.myapplication;import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;/*** Created by dell on 2021/6/18.*/import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.net.Uri;
import android.support.annotation.Nullable;public class Provider extends ContentProvider {SQLiteDatabase db;DBHelper helper;static {UriMatcher uriMatcher=new UriMatcher(UriMatcher.NO_MATCH);uriMatcher.addURI("com.example.dell.myapplication.provider","user",100);}@Overridepublic boolean onCreate() {helper=new DBHelper(getContext());db=helper.getReadableDatabase();return false;}@Nullable@Overridepublic Cursor query(Uri uri, String[] projection,String selection,String[] selectionArgs,String sortOrder) {return db.query("user",null,null,null,null,null,null);}@Nullable@Overridepublic String getType(Uri uri) {return null;}@Nullable@Overridepublic Uri insert(Uri uri,ContentValues values) {db.insert("user",null,values);return uri;}@Overridepublic int delete(Uri uri,String selection,String[] selectionArgs) {return 0;}@Overridepublic int update(Uri uri,ContentValues values,String selection,String[] selectionArgs) {return 0;}
}

receiver.java

package com.example.dell.myapplication;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.widget.EditText;import android.widget.Toast;/*** Created by Administrator on 2017/7/11 0011.*/public class receiver extends BroadcastReceiver{EditText et_input;public void onReceive(Context context, Intent intent) {//获取广播的名字String action=intent.getAction();if("com.example.dell.myapplication_broadcastreceiver.zk".equals(action)){//获取广播内容String content=intent.getStringExtra("content");Toast.makeText(context,content,Toast.LENGTH_SHORT).show();// Toast.makeText(.this, "有没写的值", Toast.LENGTH_SHORT).show();Log.d("test","广播接受者1号："+content);}}
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:background="@drawable/background2"tools:context=".MainActivity"android:weightSum="1"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="3dp"android:layout_marginRight="3dp"android:layout_marginTop="50dp"><EditTextandroid:id="@+id/zh"android:layout_width="match_parent"android:layout_height="60dp"android:background="@drawable/shape"android:gravity="center_vertical|right"android:hint="请输入帐号"android:textSize="35sp" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="10dp"><EditTextandroid:id="@+id/mm"android:layout_width="match_parent"android:layout_height="60dp"android:background="@drawable/shape"android:gravity="center_vertical|right"android:hint="请输入密码"android:inputType="textPassword"android:textSize="35sp" /></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="542dp"android:layout_marginTop="1dp"android:gravity="center"android:orientation="horizontal"><Buttonandroid:id="@+id/denglu"android:layout_width="60dp"android:layout_height="60dp"android:layout_marginLeft="10dp"android:layout_weight="1"android:background="@drawable/btn_selector"android:gravity="bottom|right"android:paddingBottom="10dp"android:paddingRight="80dp"android:text="登录"android:textColor="@color/white"android:textSize="40sp"/><Buttonandroid:id="@+id/zhuce"android:layout_width="60dp"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_weight="1"android:background="@drawable/btn_selector"android:gravity="bottom|right"android:paddingBottom="10dp"android:paddingRight="20dp"android:text="注册"android:textColor="@color/white"android:textSize="40sp" /></LinearLayout></LinearLayout>

activity_main2.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:background="@drawable/background3"tools:context=".MainActivity"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="3dp"android:layout_marginRight="3dp"android:layout_marginTop="50dp"><EditTextandroid:id="@+id/zh"android:layout_width="match_parent"android:textSize="30sp"android:hint="请输入注册帐号"android:layout_height="60dp"android:background="@drawable/shape"android:gravity="center_vertical|right"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="20dp"><EditTextandroid:id="@+id/mm"android:layout_width="match_parent"android:textSize="30sp"android:hint="请输入注册密码"android:inputType="textPassword"android:layout_height="60dp"android:background="@drawable/shape"android:gravity="center_vertical|right"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="20dp"><EditTextandroid:id="@+id/twomm"android:layout_width="match_parent"android:layout_height="60dp"android:textSize="30sp"android:hint="请再次输入密码"android:inputType="textPassword"android:background="@drawable/shape"android:gravity="center_vertical|right"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="10dp"><Buttonandroid:id="@+id/zhuce"android:layout_width="60dp"android:layout_height="110dp"android:layout_marginLeft="10dp"android:layout_weight="0.97"android:background="@drawable/btn_selector"android:gravity="bottom|right"android:paddingBottom="10dp"android:paddingRight="130dp"android:text="注册"android:textColor="@color/white"android:textSize="50sp" /></LinearLayout></LinearLayout>

activity_main3.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:background="@drawable/background"tools:context=".Main3Activity"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginLeft="3dp"android:layout_marginRight="3dp"android:layout_marginTop="50dp"><EditTextandroid:id="@+id/et_input"android:layout_width="match_parent"android:layout_height="90dp"android:background="@drawable/shape"android:editable="false"android:gravity="center_vertical|right"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="20dp"><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_clean"android:text="C"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_del"android:text="DEL"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_divide"android:text="/"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_multiplay"android:text="*"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="10dp"><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_7"android:text="7"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_8"android:text="8"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_9"android:text="9"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_minus"android:text="-"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:gravity="center"android:orientation="horizontal"android:layout_marginTop="10dp"><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_4"android:text="4"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_5"android:text="5"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_6"android:text="6"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_plus"android:text="+"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"android:layout_marginTop="10dp"><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="match_parent"android:orientation="vertical"android:layout_weight="3"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_1"android:text="1"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_2"android:text="2"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_3"android:text="3"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/></LinearLayout><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_marginTop="10dp"><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_0"android:text="0"android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/><Buttonandroid:layout_width="60dp"android:layout_height="60dp"android:id="@+id/btn_point"android:text="."android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/btn_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/></LinearLayout></LinearLayout><LinearLayoutandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"><Buttonandroid:layout_width="60dp"android:layout_height="130dp"android:id="@+id/btn_equal"android:text="="android:textSize="30sp"android:textColor="@color/white"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_weight="1"android:gravity="bottom|right"android:background="@drawable/orange_selector"android:paddingBottom="10dp"android:paddingRight="10dp"/></LinearLayout></LinearLayout>
</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.example.dell.myapplication"><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><activity android:name=".Main2Activity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><activity android:name=".Main3Activity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><providerandroid:authorities="com.example.dell.myapplication.provider"android:name=".Provider"android:exported="true"/><serviceandroid:name=".MusicService"android:enabled="true"android:exported="true"></service><serviceandroid:name=".MusicService2"android:enabled="true"android:exported="true"></service><serviceandroid:name=".MusicService3"android:enabled="true"android:exported="true"></service><receiver android:name=".receiver"android:enabled="true"android:exported="true"><intent-filter><action android:name="com.example.dell.myapplication_broadcastreceiver.zk"></action></intent-filter></receiver></application></manifest>

Android趣味计算器相关推荐

android简易计算器
android简易计算器说明:完成简易版计算器,能够实现基本的加.减.乘.除运算图示: 布局文件 <?xml version="1.0" encoding="u ...
Android简单计算器实现
Android简单计算器实现前言最近刚开始学习安卓,只是简单的看到布局那块,就开始上手写了,从布局那里就开始各种乱,还到处拖按钮,一开始的第一版只能实现两个数的运算,比较简单,就是简单的上了个手, ...
android 字符串转小数点,Android实现计算器（计算表达式/计算小数点以及括号）...
本文实例为大家分享了Android实现计算器的具体代码,供大家参考,具体内容如下布局代码: xmlns:app="http://schemas.android.com/apk/res-au ...
Android个人所得税计算器
本人所做的android个人所得税计算器程序. 先贴效果图: 1.layout布局主要使用TableLayout,代码如下 <?xml version="1.0" encod ...
android复杂计算器代码,android简单计算器代码
<android简单计算器代码>由会员分享,可在线阅读,更多相关<android简单计算器代码(9页珍藏版)>请在人人文库网上搜索. 1.package class Calcu ...
android实现计算器功能吗,利用Android实现一个简单的计算器功能
利用Android实现一个简单的计算器功能发布时间:2020-11-20 16:25:01 来源:亿速云阅读:90 作者:Leah 今天就跟大家聊聊有关利用Android实现一个简单的计算器功能, ...
android开发计算器微积分,不到1M的良心之作！连微积分都能算的计算器APP_TOM科技...
[PConline 应用]计算器可谓是被手机取代的一大电子产品了,不过手机上的APP是否真的有传统的计算器好用?也并不一定.一来,手机上的计算器APP功能普遍偏弱,特别是手机ROM自带的计算器:二来, ...
android 开源计算器,开源Windows 10计算器应用迎来Web/Android/iOS移植版
开源的跨平台特性,使得基于 UWP 代码的 Windows 10 计算器应用可以在非 Windows 平台上运行. Uno 在一篇博客文章中表示:Windows Calculator 完全使用标准的 ...
android简易计算器的实现
最近接触了android开发就试着写了一个计算器的小程序: 在xml文件中的布局代码如下: 1 <?xml version="1.0" encoding="utf- ...

Android趣味计算器

Android趣味计算器相关推荐

最新文章

热门文章