創建Android桌面上的應用程序的快捷方式圖標

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Typeface;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.view.Menu;

public class MainActivity extends Activity {
@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    installShortCut();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

private void installShortCut(){ 
    Intent shortcutIntent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT"); 
    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(R.string.app_name)); 
    // 是否可以有多個快捷方式的副本，參數如果是true就可以生成多個快捷方式，如果是false就不會重復添加 
    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, generatorContactCountIcon(((BitmapDrawable)(getResources().getDrawable(R.drawable.ic_launcher))).getBitmap())); 
    shortcutIntent.putExtra("duplicate", false); 
    Intent mainIntent = new Intent(Intent.ACTION_MAIN); 
    mainIntent.addCategory(Intent.CATEGORY_LAUNCHER); 

    // 要刪除的應用程序的ComponentName，即應用程序包名+activity的名字 
    //intent2.setComponent(new ComponentName(this.getPackageName(), this.getPackageName() + ".MainActivity")); 
    mainIntent.setClass(this, this.getClass()); 

    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, mainIntent); 
    //shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(this, R.drawable.icon)); 
    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, generatorContactCountIcon(((BitmapDrawable)(getResources().getDrawable(R.drawable.ic_launcher))).getBitmap())); 
    sendBroadcast(shortcutIntent); 
} 

private Bitmap generatorContactCountIcon(Bitmap icon){ 
    //初始化畫布 
    int iconSize=(int)getResources().getDimension(android.R.dimen.app_icon_size); 
    Bitmap contactIcon=Bitmap.createBitmap(iconSize, iconSize, Config.ARGB_8888); 
    Canvas canvas=new Canvas(contactIcon); 

    //拷貝圖片 
    Paint iconPaint=new Paint(); 
    iconPaint.setDither(true);//防抖動 
    iconPaint.setFilterBitmap(true);//用來對Bitmap進行濾波處理，這樣，當你選擇Drawable時，會有抗鋸齒的效果 
    Rect src=new Rect(0, 0, icon.getWidth(), icon.getHeight()); 
    Rect dst=new Rect(0, 0, iconSize, iconSize); 
    canvas.drawBitmap(icon, src, dst, iconPaint); 

    //在圖片上創建一個覆蓋的聯系人個數 
    int contacyCount=11; 
    //啟用抗鋸齒和使用設備的文本字距 
    Paint countPaint=new Paint(Paint.ANTI_ALIAS_FLAG|Paint.DEV_KERN_TEXT_FLAG); 
    countPaint.setColor(Color.RED); 
    countPaint.setTextSize(20f); 
    countPaint.setTypeface(Typeface.DEFAULT_BOLD); 
    canvas.drawText(String.valueOf(contacyCount), iconSize-18, 25, countPaint); 
    return contactIcon; 
} 

}
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