android判断应用是否有某个权限

android在开发中有时候要判断应用中是否有某项权限，或者想获取到某个应用的权限清单，可以使用以下方法

1) 判断应用是否具有某个权限

PackageManager pm = getPackageManager();
		boolean permission = (PackageManager.PERMISSION_GRANTED == 
				pm.checkPermission("android.permission.RECORD_AUDIO", "packageName"));
		if (permission) {
			showToast("有这个权限");
		}else {
			showToast("木有这个权限");
		}

2)获取某个应用的权限清单

try {
			PackageInfo pack = pm.getPackageInfo("packageName",PackageManager.GET_PERMISSIONS);</span>
			String[] permissionStrings = pack.requestedPermissions;
			showToast("权限清单--->" + permissionStrings.toString());
		} catch (NameNotFoundException e) {
			e.printStackTrace();
		}

permissionStrings 是一个这样的字符串数组

[android.permission.INTERNET, 
		 android.permission.READ_PHONE_STATE, 
		 android.permission.READ_CONTACTS, 
		 ……
		 android.permission.READ_EXTERNAL_STORAGE, 
		 android.permission.READ_CALL_LOG, 
		 android.permission.WRITE_CALL_LOG]