Android生成桌面快捷方式的几种方法：

 

//------------以下为动态替换桌面应用Icon的一种解决方案-------------------    // 1.获取本地目录图片的Bitmap ;根据Bitmap绘制新的canvas画布Jicanvas画布上添加文字信息；最终获得一个带有canvas的Bitmap:NewIcon    public Bitmap getBitmap() {        //获取本地bitmap        Bitmap bitmap = BitmapFactory.decodeFile("/scard/1.png");        Bitmap bitmap2 = BitmapFactory.decodeFile("/scard/2.png");        //根据Bitmap绘制新的Canvas画布        Bitmap NewIcon = Bitmap.createBitmap(android.R.dimen.app_icon_size, android.R.dimen.app_icon_size, Bitmap.Config.ARGB_8888);        Canvas canvas = new Canvas(NewIcon);        int iconSize = getResources().getDimensionPixelSize(android.R.dimen.app_icon_size);        Paint iconPaint = new Paint();        Rect src = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());        Rect dst = new Rect(0, 0, iconSize, iconSize);        canvas.drawBitmap(bitmap, src, dst, iconPaint);        //w往canvas 画布上添加文字信息        Paint StrPaint = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);        StrPaint.setColor(Color.RED);        StrPaint.setTextSize(20f);        StrPaint.setTypeface(Typeface.DEFAULT_BOLD);        canvas.drawText("正面", iconSize - 45, 20, StrPaint);        //最终获得一个带有canvas的Bitmap:NewIcon        return NewIcon;    }    //2.使用新的Bitmap在Home界面创建制定应用的启动项    public void setHomeIcon() {        Intent shortcutIntent = new Intent("com.android.launcher.action.UNINSTALL_SHORTCUT");        shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, "MaginIcon");        Intent mainIntent = new Intent(Intent.ACTION_MAIN);        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);        mainIntent.setClass(this, MainActivityBak.class);        shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, mainIntent);        sendBroadcast(shortcutIntent);    }    public void setIcons() {        //创建新的启动项        Intent shortcutIntent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");        shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, "MagicsIcon");        //设置不可以创建多个启动项        shortcutIntent.putExtra("duplicate", false);        //创建Home界面启动项        Intent mainIntent = new Intent(Intent.ACTION_MAIN);        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);        mainIntent.setClass(this, MainActivityBak.class);        PackageManager pkgMag = getPackageManager();        Intent queryIntent = new Intent(Intent.ACTION_MAIN, null);        queryIntent.addCategory(Intent.CATEGORY_LAUNCHER);//        List
     
       list = pkgMag.queryIntentActivities(queryIntent,PackageManager.GET_ACTIVITIES);////        for(int i = 0;i < list.size();i++){//            ResolveInfo info = list.get(i);//            if(info.activityInfo.packageName.equals(pk)){////            }//        }        shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, mainIntent);        shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, getBitmap());        sendBroadcast(shortcutIntent);    }    //------------以下为动态替换桌面应用Icon的一种解决方案-------------------    //------------以下为生成桌面widget的几种方法,本质一样----------------    private void shortcutAdd(String name, int number) {        // Intent to be send, when shortcut is pressed by user ("launched")        Intent shortcutIntent = new Intent(getApplicationContext(), MainActivityBak.class);        //shortcutIntent.setAction(SyncStateContract.Constants.ACCOUNT_NAME);        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        // Create bitmap with number in it -> very default. You probably want to give it a more stylish look        Bitmap bitmap = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888);        Paint paint = new Paint();        paint.setColor(0xFFFF0000); // gray        paint.setTextAlign(Paint.Align.CENTER);        paint.setTextSize(50);        new Canvas(bitmap).drawText("" + number, 50, 50, paint);        ((ImageView) findViewById(R.id.icon)).setImageBitmap(bitmap);        // Decorate the shortcut        Intent addIntent = new Intent();        addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);        addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, name);        addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, bitmap);        // Inform launcher to create shortcut        addIntent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");        getApplicationContext().sendBroadcast(addIntent);    }    private void shortcutDel(String name) {        // Intent to be send, when shortcut is pressed by user ("launched")        Intent shortcutIntent = new Intent(getApplicationContext(), MainActivityBak.class);        shortcutIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        // Decorate the shortcut        Intent delIntent = new Intent();        delIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);        delIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, name);        // Inform launcher to remove shortcut        delIntent.setAction("com.android.launcher.action.UNINSTALL_SHORTCUT");        getApplicationContext().sendBroadcast(delIntent);    }    public void addShortCut() {        Intent myLauncherIntent = new Intent(this, MainActivityBak.class);        myLauncherIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);        Intent intent = new Intent();        intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, myLauncherIntent);        intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, "MagicIcon");        intent.putExtra                (                        Intent.EXTRA_SHORTCUT_ICON_RESOURCE,                        Intent.ShortcutIconResource.fromContext                                (                                        getApplicationContext(),                                        R.mipmap.ic_launcher                                )                );        intent.setAction("com.android.launcher.action.INSTALL_SHORTCUT");        getApplicationContext().sendBroadcast(intent);    }