android 判断一个app是否是输入法

	public static boolean isInputMethodApp(Context context, String strPkgName) {
		
		PackageManager pkm = context.getPackageManager();
		boolean bIsIME = false;
		PackageInfo pkgInfo;
		try {
			pkgInfo = pkm.getPackageInfo(strPkgName, PackageManager.GET_SERVICES);
			ServiceInfo[] servicesInfos = pkgInfo.services;
			if(null != servicesInfos){
				for (int i = 0; i < servicesInfos.length; i++) {
					ServiceInfo sInfo = servicesInfos[i];
					if(null != sInfo.permission && sInfo.permission.equals("android.permission.BIND_INPUT_METHOD")){
						Log.i("isInputMethodApp ", strPkgName);
						bIsIME = true;
						break;
					};
				}
			}
		} catch (NameNotFoundException e) {
			e.printStackTrace();
		} catch (Exception e) {			
			e.printStackTrace();
		}
		return bIsIME;
	}