Question

我编写了一个示例代码，以便于理解运行时权限。它工作正常。但我面临的问题是，如果用户在任何阶段单击“永不询问权限”，即使在卸载后重新安装/全新安装，App也会停止询问权限。这是它的工作方式还是我缺少的东西。我还提到Android M - check runtime permission - how to determine if the user checked "Never ask again"?很好地解释了这些事情，但仍然想澄清我对它的困惑。

这是代码：

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView te1;

        te1 = (TextView) findViewById(R.id.te1);

        te1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    if (ActivityCompat.shouldShowRequestPermissionRationale(MainActivity.this, Manifest.permission.ACCESS_FINE_LOCATION)) {

                                android.app.AlertDialog.Builder builder = new android.app.AlertDialog.Builder(MainActivity.this);
                                builder.setTitle("Title");
                                builder.setMessage("Fill Form")
                                        .setCancelable(false) //false will disable clicking anywhere in screen during alter.
                                        .setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                                            public void onClick(DialogInterface dialog, int which) {
                                                ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
                                            }
                                        })
                                        .setNegativeButton("Do it Later", new DialogInterface.OnClickListener() {
                                            @Override
                                            public void onClick(DialogInterface dialog, int which) {
                                                dialog.dismiss();

                                            }
                                        });
                                android.app.AlertDialog alert = builder.create();
                                alert.show();

                    }else {
                        Toast.makeText(MainActivity.this, "You Selected Never Asked this Permission again", Toast.LENGTH_SHORT).show();
                    }
                } else {
                    Toast.makeText(MainActivity.this, "Intent Fired", Toast.LENGTH_SHORT).show();
                }


            }
        });


    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case (1):
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    Toast.makeText(this, "App Need to access GPS to get your location which you can share", Toast.LENGTH_SHORT).show();

                } else {
                    Toast.makeText(this, "You did not get permission.Do Nothing", Toast.LENGTH_SHORT).show();
                }

        }


    }
}

Answer 1

AFAIK：

shouldShowRequestPermissionRationale()

如果应用先前已请求权限且用户拒绝了请求，则此选项将返回true - 如果用户选择“再也不再请求此权限”，则会返回。

如果用户之前拒绝了该请求，则该用户只会看到“再也不会要求此权限”。

即使在按下“再也没有请求此权限”之后，您是否仍然在请求权限时回复onRequestPermissionsResult？

如果是这样，您可以监听该回调并请求用户直接通过设置更改权限。

您可以使用以下方法将用户定向到设置。

public static void goToAppSettings(@NonNull final Context context) {
    final Intent i = new Intent();
    i.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
    i.addCategory(Intent.CATEGORY_DEFAULT);
    i.setData(Uri.parse("package:" + context.getPackageName()));
    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    i.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
    i.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
    context.startActivity(i);
}

运行时权限，永远不要求权限处理

1 个答案: