android判断应用是否有某个权限

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]