运行时权限不起作用

Question

这是我在 OnCreate() 方法中的代码：

if (ContextCompat.checkSelfPermission(thisActivity,
            Manifest.permission.READ_CONTACTS)
    != PackageManager.PERMISSION_GRANTED) {

if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity,
        Manifest.permission.RECIEVE_SMS)) {

} else {

    ActivityCompat.requestPermissions(thisActivity,
            new String[]{Manifest.permission.READ_CONTACTS},1);
}

在我的 onRequestPermissionsResult() 方法中：

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {
        case 1:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

              init();
}else{
         finish();
 }

并且我的 Manifest 文件具有以下权限

<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.READ_SMS"/>

但我没有收到请求权限的对话框，我无法找出问题所在？

Answer 1

如果您的应用面向 Android 6.0 及更高版本，则添加运行时权限

从 Android 6.0（API 级别 23）开始，用户在应用运行时而不是在安装应用时授予应用权限

使用下面的代码为 READ_SMS 添加运行时权限

String permission = Manifest.permission.READ_SMS;
int grant = ContextCompat.checkSelfPermission(this, permission);
if (grant != PackageManager.PERMISSION_GRANTED) {
    String[] permission_list = new String[1];
    permission_list[0] = permission;
    ActivityCompat.requestPermissions(this, permission_list, 1);
}

然后像这样处理结果

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                       @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (requestCode == 1) {
        if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            Toast.makeText(AccountClass.this,"permission granted", Toast.LENGTH_SHORT).show();  
             // perform your action here

        } else {
            Toast.makeText(AccountClass.this,"permission not granted", Toast.LENGTH_SHORT).show();
        }
    }

}

Answer 2

试试这个：

if (ActivityCompat.checkSelfPermission(AddnewPhotoActivity.this, Manifest.permission.READ_EXTERNAL_STORAGE)
                    != PackageManager.PERMISSION_GRANTED) {

                ActivityCompat.requestPermissions(AddnewPhotoActivity.this, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, REQUEST_READ_EXTERNAL_STORAGE);

            } else {

                isPermissionGranted(true);
            }

isPermissionGranted(boolean); ====> 方法调用

public void isPermissionGranted(boolean permission) {
        if (permission) {


           //Your Operation


        } else {

            Toast.makeText(this, "Permission not granted", Toast.LENGTH_SHORT).show();
        }
    }

onRequestPermissionsResult

@Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        if (requestCode == REQUEST_READ_EXTERNAL_STORAGE) {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                isPermissionGranted(true);

            } else

            {
                isPermissionGranted(false);
            }
        }

    }