整理一些常用的关于Activity

image.png

电话

Intent.ACTION_DIAL 跳转到拨打电话的页面

Uri data = Uri.parse("tel:" + "15523872***");

intent.setData(data);//指定电话号码

Intent.ACTION_CALL 直接打电话 需要申请权限(android 6.0 后动态申请权限 我用的easyPermission)

联系人

Intent intent = new Intent();

intent.setAction(Intent.ACTION_VIEW);

intent.setData(Contacts.People.CONTENT_URI);

startActivity(intent);

短信

Uri uri = Uri.parse("smsto:10010");

Intent intent = new Intent(Intent.ACTION_SENDTO, uri);

intent.putExtra("sms_body", "Hello");

startActivity(intent);

游览器

Uri uri = Uri.parse("http://www.baidu.com");

Intent intent = new Intent(Intent.ACTION_VIEW, uri);

startActivity(intent);

邮件

Intent email = new Intent(android.content.Intent.ACTION_SEND);

email.setType("plain/text");

String emailTitle = "标题";

String emailContent = "内容";

String[] emailReciver = new String[]{"1016762210@qq.com"};

email.putExtra(android.content.Intent.EXTRA_EMAIL, emailReciver);

email.putExtra(android.content.Intent.EXTRA_SUBJECT, emailTitle);

email.putExtra(android.content.Intent.EXTRA_TEXT, emailContent);

startActivity(email);

多媒体 (视屏)

```

Intent intent = new Intent(Intent.ACTION_VIEW);

String path = Environment.getExternalStorageDirectory().getPath()+ "/1.mp4";//该路径可以自定义

File file = new File(path);

Uri uri = Uri.fromFile(file);

intent.setDataAndType(uri, "video/*");

startActivity(intent);

```

摄像头

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

startActivityForResult(intent, 0);

系统图库

Intent intent = new Intent(Intent.ACTION_PICK, null);

intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");

startActivityForResult(intent, VALUE_PICK_PICTURE);

裁剪图片

Intent intent = new Intent("com.android.camera.action.CROP");

intent.setDataAndType(bitmap, "image/*");

// 下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪

intent.putExtra("crop", "true");

intent.putExtra("scale", true);

intent.putExtra("aspectX", 1);

intent.putExtra("aspectY", 1);

// 裁剪后输出图片的尺寸大小

intent.putExtra("outputX", 250);

intent.putExtra("outputY", 250);

intent.putExtra("return-data", true);

intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());

intent.putExtra("noFaceDetection", true); // no face detection

startActivityForResult(intent, 0);

网路设置

Intent intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);

startActivityForResult(intent, 0);

源码

import android.Manifest;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.graphics.Bitmap;

import android.net.Uri;

import android.os.Environment;

import android.provider.Contacts;

import android.provider.MediaStore;

import android.support.annotation.NonNull;

import android.support.annotation.Nullable;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import java.io.File;

import java.util.List;

import pub.devrel.easypermissions.AfterPermissionGranted;

import pub.devrel.easypermissions.AppSettingsDialog;

import pub.devrel.easypermissions.EasyPermissions;

public class EveryOpenActivity extends AppCompatActivity implements View.OnClickListener, EasyPermissions.PermissionCallbacks {

Button bt_0;

Button bt_1;

Button bt_2;

Button bt_3;

Button bt_4;

Button bt_5;

Button bt_6;

Button bt_7;

Button bt_8;

Button bt_9;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_every_open);

bt_0 = findViewById(R.id.bt_0);

bt_1 = findViewById(R.id.bt_1);

bt_2 = findViewById(R.id.bt_2);

bt_3 = findViewById(R.id.bt_3);

bt_4 = findViewById(R.id.bt_4);

bt_5 = findViewById(R.id.bt_5);

bt_6 = findViewById(R.id.bt_6);

bt_7 = findViewById(R.id.bt_7);

bt_8 = findViewById(R.id.bt_8);

bt_9 = findViewById(R.id.bt_9);

bt_0.setOnClickListener(this);

bt_1.setOnClickListener(this);

bt_2.setOnClickListener(this);

bt_3.setOnClickListener(this);

bt_4.setOnClickListener(this);

bt_5.setOnClickListener(this);

bt_6.setOnClickListener(this);

bt_7.setOnClickListener(this);

bt_8.setOnClickListener(this);

bt_9.setOnClickListener(this);

}

private void start0() {

// Intent intent = new Intent(Intent.ACTION_DIAL, uri);

// startActivity(intent);

if (EasyPermissions.hasPermissions(this,Manifest.permission.CALL_PHONE)) {

Uri uri = Uri.parse("tel:10010");

Intent intent = new Intent(Intent.ACTION_CALL, uri);

startActivity(intent);

}else {

EasyPermissions.requestPermissions(this, "打电话",1,Manifest.permission.CALL_PHONE);

}

}

@Override

public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {

super.onRequestPermissionsResult(requestCode, permissions, grantResults);

EasyPermissions.onRequestPermissionsResult(requestCode,permissions,grantResults,this);

}

@Override

public void onPermissionsGranted(int requestCode, @NonNull List perms) {

if (perms.contains(Manifest.permission.CALL_PHONE)){

Uri uri = Uri.parse("tel:10010");

Intent intent = new Intent(Intent.ACTION_CALL, uri);

startActivity(intent);

}

}

@Override

public void onPermissionsDenied(int requestCode, @NonNull List perms) {

if (!EasyPermissions.somePermissionPermanentlyDenied(this, perms)) {

new AppSettingsDialog.Builder(this)

.setRationale("此功能需要" + "电话权限" + "权限，否则无法正常使用，是否打开设置")

.setPositiveButton("是")

.setNegativeButton("否").build().show();

}

}

private void start1(){

Uri uri = Uri.parse("smsto:10010");

Intent intent = new Intent(Intent.ACTION_SENDTO, uri);

intent.putExtra("sms_body", "Hello");

startActivity(intent);

}

private void start2(){

Uri uri = Uri.parse("http://www.baidu.com");

Intent intent = new Intent(Intent.ACTION_VIEW, uri);

startActivity(intent);

}

private void start3(){

Intent email = new Intent(android.content.Intent.ACTION_SEND);

email.setType("plain/text");

String emailTitle = "标题";

String emailContent = "内容";

String[] emailReciver = new String[]{"1016762210@qq.com"};

email.putExtra(android.content.Intent.EXTRA_EMAIL, emailReciver);

email.putExtra(android.content.Intent.EXTRA_SUBJECT, emailTitle);

email.putExtra(android.content.Intent.EXTRA_TEXT, emailContent);

startActivity(email);

}

private void start4(){

Intent intent = new Intent(Intent.ACTION_VIEW);

String path = Environment.getExternalStorageDirectory().getPath()+ "/1.mp4";//该路径可以自定义

File file = new File(path);

Uri uri = Uri.fromFile(file);

intent.setDataAndType(uri, "video/*");

startActivity(intent);

}

private void start5(){

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

startActivityForResult(intent, 0);

}

public static final int CROP_REQUEST = 2;

Uri bitmap;

@Override

protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (resultCode == RESULT_OK) {

switch (requestCode) {

case VALUE_PICK_PICTURE: // 如果是直接从相册获取

bitmap = data.getData();//拿到所选图片的Uri

break;

}

}

}

private void start6(){

Intent intent = new Intent("com.android.camera.action.CROP");

intent.setDataAndType(bitmap, "image/*");

// 下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪

intent.putExtra("crop", "true");

intent.putExtra("scale", true);

intent.putExtra("aspectX", 1);

intent.putExtra("aspectY", 1);

// 裁剪后输出图片的尺寸大小

intent.putExtra("outputX", 250);

intent.putExtra("outputY", 250);

intent.putExtra("return-data", true);

intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());

intent.putExtra("noFaceDetection", true); // no face detection

startActivityForResult(intent, 0);

}

private void start7(){

Intent intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);

startActivityForResult(intent, 0);

}

private void start8(){

Intent intent = new Intent();

intent.setAction(Intent.ACTION_VIEW);

intent.setData(Contacts.People.CONTENT_URI);

startActivity(intent);

}

public static final int VALUE_PICK_PICTURE = 1;

private void start9() {

Intent intent = new Intent(Intent.ACTION_PICK, null);

intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");

startActivityForResult(intent, VALUE_PICK_PICTURE);

}

@Override

public void onClick(View view) {

switch (view.getId()){

case R.id.bt_0:

start0();

break;

case R.id.bt_1:

start1();

break;

case R.id.bt_2:

start2();

break;

case R.id.bt_3:

start3();

break;

case R.id.bt_4:

start4();

break;

case R.id.bt_5:

start5();

break;

case R.id.bt_6:

start6();

break;

case R.id.bt_7:

start7();

break;

case R.id.bt_8:

start8();

break;

case R.id.bt_9:

start9();

break;

}

}

}