Android 在 Android 6.0 中不显示 RECORD_AUDIO 的权限对话框

Question

Android 不显示 RECORD_AUDIO 的权限对话框

我已经在android list 中添加了所需的权限

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

和下面的代码

private boolean checkPermission() {
        int result = ContextCompat.checkSelfPermission(this, android.Manifest.permission.RECORD_AUDIO);
        if (result == PackageManager.PERMISSION_GRANTED) {
            return true;
        } else {
            return false;
        }
    }

private void requestPermission() {

        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.RECORD_AUDIO)) {
 Toast.makeText(this, "RECORD AUDIO Permission is required.",
                    Toast.LENGTH_LONG).show();

        } else {

            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.RECORD_AUDIO},
                    PERMISSION_REQUEST_CODE);

        }
    }

并检查它

if (!checkPermission()) {
                requestPermission();
            }

但是请求权限的对话框或请求权限的屏幕没有显示，

我正在模拟器上测试 android 6.0

Answer 1

ActivityCompat.shouldShowRequestPermissionRationale() 方法仅在应显示消息时发出信号。无论其返回值如何，您都应该请求许可。

查看此示例中的第 142 行:https://developer.android.com/samples/RuntimePermissions/src/com.example.android.system.runtimepermissions/MainActivity.html#l142

/**
 * Requests the Camera permission.
 * If the permission has been denied previously, a SnackBar will prompt the user to grant the
 * permission, otherwise it is requested directly.
 */
private void requestCameraPermission() {
    Log.i(TAG, "CAMERA permission has NOT been granted. Requesting permission.");

    if (ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.CAMERA)) {
        // Provide an additional rationale to the user if the permission was not granted
        // and the user would benefit from additional context for the use of the permission.
        // For example if the user has previously denied the permission.
        Log.i(TAG,
                "Displaying camera permission rationale to provide additional context.");
        Snackbar.make(mLayout, R.string.permission_camera_rationale,
                Snackbar.LENGTH_INDEFINITE)
                .setAction(R.string.ok, new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        ActivityCompat.requestPermissions(MainActivity.this,
                                new String[]{Manifest.permission.CAMERA},
                                REQUEST_CAMERA);
                    }
                })
                .show();
    } else {

        // Camera permission has not been granted yet. Request it directly.
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.CAMERA},
                REQUEST_CAMERA);
    }
}