图片放大缩小旋转左移右移镜像倒影android

图片放大缩小旋转左移右移镜像倒影

demo:

TestImage

1. 将 meinv.jpg 图片拷贝到以下目录TestImage\app\src\main\res\mipmap-hdpi

1.AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.glsite.testimage"><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></application></manifest>

2.activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><ImageViewandroid:id="@+id/iv"android:layout_width="wrap_content"android:layout_height="wrap_content"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent"android:src="@mipmap/meinv"/><Buttonandroid:id="@+id/button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginStart="8dp"android:layout_marginLeft="8dp"android:layout_marginTop="8dp"android:onClick="turnBig"android:text="放大"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="8dp"android:layout_marginEnd="8dp"android:layout_marginRight="8dp"android:onClick="turnSmall"android:text="缩小"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>

3.activity_main2.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><ImageViewandroid:id="@+id/iv"android:layout_width="wrap_content"android:layout_height="wrap_content"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent"android:src="@mipmap/meinv"/><Buttonandroid:id="@+id/button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginStart="8dp"android:layout_marginLeft="8dp"android:layout_marginTop="8dp"android:onClick="turnLeft"android:text="左移"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="8dp"android:layout_marginEnd="8dp"android:layout_marginRight="8dp"android:onClick="turnRight"android:text="右移"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>

4.activity_main3.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><ImageViewandroid:id="@+id/iv"android:layout_width="wrap_content"android:layout_height="wrap_content"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent"android:src="@mipmap/meinv"/><Buttonandroid:id="@+id/button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginStart="8dp"android:layout_marginLeft="8dp"android:layout_marginTop="8dp"android:onClick="turnCircleLeft"android:text="逆时针旋转"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="8dp"android:layout_marginEnd="8dp"android:layout_marginRight="8dp"android:onClick="turnCircleRight"android:text="顺时针旋转"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>

5.activity_main4.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><ImageViewandroid:id="@+id/iv"android:layout_width="wrap_content"android:layout_height="wrap_content"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintLeft_toLeftOf="parent"app:layout_constraintRight_toRightOf="parent"app:layout_constraintTop_toTopOf="parent"android:src="@mipmap/meinv"/><Buttonandroid:id="@+id/button"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginStart="8dp"android:layout_marginLeft="8dp"android:layout_marginTop="8dp"android:onClick="click01"android:text="倒影"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><Buttonandroid:id="@+id/button2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginTop="8dp"android:layout_marginEnd="8dp"android:layout_marginRight="8dp"android:onClick="click02"android:text="镜面"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>

6.MainActivity.java

package com.glsite.testimage;import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;public class MainActivity extends AppCompatActivity {private ImageView mIv;private int dx = 0;private int degress = 0;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main4);mIv = findViewById(R.id.iv);}/*** 放大* @param view*/public void turnBig(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();matrix.setScale(2, 2);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth() * 2, bitmap.getHeight() * 2, bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();paint.setColor(Color.BLACK);canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 缩小* @param view*/public void turnSmall(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();matrix.setScale(0.5f, 0.5f);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();paint.setColor(Color.BLACK);canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 左移* @param view*/public void turnLeft(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();dx--;matrix.setTranslate(dx, 0);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();canvas.drawColor(Color.WHITE);paint.setColor(Color.BLACK);canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 右移* @param view*/public void turnRight(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();dx++;matrix.setTranslate(dx, 0);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();canvas.drawColor(Color.WHITE);paint.setColor(Color.BLACK);canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 逆时针旋转* @param view*/public void turnCircleLeft(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();matrix.setRotate(--degress, bitmap.getWidth(), bitmap.getHeight());matrix.postTranslate(100, 100);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth()*2, bitmap.getHeight()*2, bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();canvas.drawColor(Color.WHITE);paint.setColor(Color.BLACK);paint.setAntiAlias(true);// 消除锯齿canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 顺时针旋转* @param view*/public void turnCircleRight(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();matrix.setRotate(++degress, bitmap.getWidth(), bitmap.getHeight());matrix.postTranslate(100, 100);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap((int)(bitmap.getWidth()*1.5), (int)(bitmap.getHeight()*1.5), bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();canvas.drawColor(Color.WHITE);paint.setColor(Color.BLACK);paint.setAntiAlias(true);// 消除锯齿canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 倒影* @param view*/public void click01(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();matrix.setScale(1, -1);matrix.postTranslate(0, bitmap.getHeight());// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();canvas.drawColor(Color.WHITE);paint.setColor(Color.BLACK);paint.setAntiAlias(true);// 消除锯齿canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}/*** 镜面* @param view*/public void click02(View view) {Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);Matrix matrix = new Matrix();matrix.setScale(-1, 1);matrix.postTranslate(bitmap.getWidth(), 0);// 1.买一张纸Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());// 2.买一个画板Canvas canvas = new Canvas(newBitmap);// 3.临摹绘画Paint paint = new Paint();canvas.drawColor(Color.WHITE);paint.setColor(Color.BLACK);paint.setAntiAlias(true);// 消除锯齿canvas.drawBitmap(bitmap, matrix, paint);mIv.setImageBitmap(newBitmap);}
}

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图片放大缩小旋转左移右移镜像倒影android

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