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));           // 是否可以有多个快捷方式的副本，参数如果是true就可以生成多个快捷方式，如果是false就不会重复添加           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);             // 要删除的应用程序的ComponentName，即应用程序包名+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){           //初始化画布           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);             //拷贝图片           Paint iconPaint=new Paint();           iconPaint.setDither(true);//防抖动           iconPaint.setFilterBitmap(true);//用来对Bitmap进行滤波处理，这样，当你选择Drawable时，会有抗锯齿的效果           Rect src=new Rect(0, 0, icon.getWidth(), icon.getHeight());           Rect dst=new Rect(0, 0, iconSize, iconSize);           canvas.drawBitmap(icon, src, dst, iconPaint);             //在图片上创建一个覆盖的联系人个数           int contacyCount=11;           //启用抗锯齿和使用设备的文本字距           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;       }   }