Android创建桌面快捷方式

 // 判断是不是早已存有快捷方式图标
    public boolean isExistShortCut() {
        boolean isInstallShortcut = false;
        final ContentResolver cr = Main3Activity.this.getContentResolver();
        // 2.2系统以后是”com.android.launcher2.settings”,以前的为"com.android.launcher.settings"
        final String AUTHORITY = "com.android.launcher2.settings";
        final Uri CONTENT_URI = Uri.parse("content://"   AUTHORITY   "/favorites?notify=true");
        Cursor c = cr.query(CONTENT_URI, new String[] { "title", "iconResource" }, "title=?",
                new String[] { getString(R.string.app_name) }, null);
        if (c != null && c.getCount() > 0) {
            isInstallShortcut = true;
            System.out.println("早已存有快捷方式图标");
        }
        return isInstallShortcut;
    }

    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
    <uses-permission android:name="com.android.launcher.permission.UNINSTALL_SHORTCUT"/>
    <!-- 快捷方式图标信息内容必须从setting中载入 -->
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS"/>

if(!isExistShortCut()){
                    //String title=getResources().getString(R.string.title);
                    Intent addIntent=new Intent("com.android.launcher.action.INSTALL_SHORTCUT");
                    Parcelable icon=Intent.ShortcutIconResource.fromContext(this, R.drawable.ic_launcher); //获得键盘快捷键的标志
                    Intent myIntent=new Intent(this, MainActivity.class);
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, getString(R.string.app_name));//快捷方式图标的题目
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, icon);//快捷方式图标的标志
                    addIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, myIntent);//快捷方式图标的姿势
                    addIntent.putExtra("duplicate",false);
                    sendBroadcast(addIntent);//推送广播节目
                }