android判断应用是不是有某个权限

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

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");		}

<span style="color: rgb(51, 51, 51); font-family: Arial; font-size: 14px; line-height: 26px;">获取某个应用的权限清单</span>

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();		}

1. android.permission.INTERNET,   
2. android.permission.READ_PHONE_STATE,   
3. android.permission.READ_CONTACTS
4. 等。。。。