Android開發圖形處理建立一個圖形的拷貝

Android開發圖形處理建立一個圖形的拷貝
定義一個布局檔案

在mainactivity中實現邏輯

package com.wzw.imagecopy;import android.app.Activity;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.os.Bundle;import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener;import android.view.View;import android.widget.ImageView;public class MainActivity extends Activity {private ImageView imageView1;private ImageView imageView2;private Bitmap srcBm;private Bitmap copyBm;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imageView1=(ImageView) findViewById(R.id.iv1);imageView2=(ImageView) findViewById(R.id.iv2);srcBm=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);imageView1.setImageBitmap(srcBm);//建立原圖的一個副本,可以修改圖片copyBm=Bitmap.createBitmap(srcBm.getWidth(), srcBm.getHeight(), srcBm.getConfig());}/** * 建立原圖的一個複製 * @param v */public void copy(View v){//準備一個畫板Canvas canvas=new Canvas(copyBm);//準備畫筆Paint paint=new Paint();paint.setColor(Color.BLACK);//3.開始畫Matrix m=new Matrix();//按照1:1畫圖canvas.drawBitmap(srcBm, m, paint);//仿照原圖作畫imageView2.setImageBitmap(copyBm);}}