Android中创建和检测快捷方式

public class ShortcutUtil {

/**
* 创建快捷方式
*
* @param context
*/
public static void createShortcut(Context context, Class<?> target) {
// <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
Intent intent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");
intent.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, Intent.ShortcutIconResource.fromContext(context, R.drawable.icon));
intent.putExtra(Intent.EXTRA_SHORTCUT_NAME, context.getString(R.string.app_name));
intent.putExtra("duplicate", false);
Intent sIntent = new Intent(Intent.ACTION_MAIN);
sIntent.addCategory(Intent.CATEGORY_LAUNCHER);// 加入action,和category之后，程序卸载的时候才会主动将该快捷方式也卸载
sIntent.setClass(context, target);
intent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, sIntent);
context.sendBroadcast(intent);
}

/**
* 判断桌面上是否有的快捷方式
*
* @return
*/
public static boolean hasShortcut(Context context) {
final ContentResolver cr = context.getContentResolver();
final String AUTHORITY = "com.android.launcher.settings";
final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/favorites?notify=true");
// <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS"/>
Cursor c = cr.query(CONTENT_URI, new String[] { "intent" }, null, null, null);
if (c == null) {
// 注: 2.1update和2.2版本的真机上测试无法访问com.android.launcher.settings，2.1update1的模拟器上可以
// ERROR/ActivityThread(1136): Failed to find provider info for com.android.launcher.settings
return false;
}
while (c.moveToNext()) {
String intentstring = c.getString(c.getColumnIndex("intent"));
if (intentstring == null) {
continue;
}
String componentString = getComponentString(intentstring);
if (componentString.startsWith(context.getPackageName())) {
return true;
}
}
return false;
}

private static String getComponentString(String intentInfo) {
// intent info 的格式:intent=#Intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;launchFlags=0x10200000;component=com.allstar.tanzhi/.activities.StartActivity;end
int start = intentInfo.indexOf("component") + 9 + 1;
int end = intentInfo.indexOf(";", start);
return intentInfo.substring(start, end);
}