权限对话框

Question

在我的 AndroidManifest.xml:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

但是当我安装了 App-APK 后，我必须在设置中手动设置 Android OS 中的权限（设置 > 应用 > myApp > 权限 > 存储）。

我怎样才能让权限自动设置。或者我的应用程序的用户必须在对话框中确认？

Answer 1

在您的项目中复制给定 class。

package com.betaiit.helper;

import android.Manifest;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.os.Build;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;

/**
 * Created by Sathish Gadde on 08/05/17.
*/
public class Utility {

public static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 123;
public static final int MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE = 124;



/**
 * Check READ_EXTERNAL_STORAGE Permission
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean checkPermission_ReadExternalStorage(final Context context) {
    int currentAPIVersion = Build.VERSION.SDK_INT;
    if (currentAPIVersion >= Build.VERSION_CODES.M) {
        if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, Manifest.permission.READ_EXTERNAL_STORAGE)) {
                AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);
                alertBuilder.setCancelable(true);
                alertBuilder.setTitle("Permission necessary");
                alertBuilder.setMessage("External storage permission is necessary");
                alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
                    public void onClick(DialogInterface dialog, int which) {
                        ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
                    }
                });
                AlertDialog alert = alertBuilder.create();
                alert.show();

            } else {
                ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
            }
            return false;
        } else {
            return true;
        }
    } else {
        return true;
    }

}

/**
 * Check WRITE_EXTERNAL_STORAGE Permission
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean checkPermission_WriteExternalStorage(final Context context) {
    int currentAPIVersion = Build.VERSION.SDK_INT;
    if (currentAPIVersion >= Build.VERSION_CODES.M) {
        if (ContextCompat.checkSelfPermission(context, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
                AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);
                alertBuilder.setCancelable(true);
                alertBuilder.setTitle("Permission necessary");
                alertBuilder.setMessage("External storage permission is necessary");
                alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                    @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
                    public void onClick(DialogInterface dialog, int which) {
                        ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
                    }
                });
                AlertDialog alert = alertBuilder.create();
                alert.show();

            } else {
                ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, MY_PERMISSIONS_REQUEST_WRITE_EXTERNAL_STORAGE);
            }
            return false;
        } else {
            return true;
        }
    } else {
        return true;
    }

}

}

现在检查您的 activity 的权限：

    Utility.checkPermission_ReadExternalStorage(context);
    Utility.checkPermission_WriteExternalStorage(context);

现在从您的片段中检查权限：

    Utility.checkPermission_ReadExternalStorage(getActivity());
    Utility.checkPermission_WriteExternalStorage(getActivity());

Answer 2

我使用以下代码在我的应用中获取权限字符串

 <string name="permissions_title">Permissions</string>
<string name="draw_over_permissions_message">To display Audio Widget app needs the permission to draw over another apps.</string>
<string name="read_ext_permissions_message">To load list of music app needs access to your media files.</string>
<string name="btn_continue">Continue</string>
<string name="btn_cancel">Cancel</string>
<string name="toast_permissions_not_granted">Permissions not granted.</string>

java

 @TargetApi(Build.VERSION_CODES.M)
private void checkReadStoragePermission() {
    if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.READ_EXTERNAL_STORAGE)) {
            DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if (which == DialogInterface.BUTTON_POSITIVE) {

                        ActivityCompat.requestPermissions(ParentActivity.this, new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE}, EXT_STORAGE_PERMISSION_REQ_CODE);


                    } else if (which == DialogInterface.BUTTON_NEGATIVE) {
                        onPermissionsNotGranted();

                    }
                    dialog.dismiss();
                    finish();
                    startActivity(getIntent());
                }
            };
            new AlertDialog.Builder(this)
                    .setTitle(R.string.permissions_title)
                    .setMessage(R.string.read_ext_permissions_message)
                    .setPositiveButton(R.string.btn_continue, onClickListener)
                    .setNegativeButton(R.string.btn_cancel, onClickListener)
                    .setCancelable(false)
                    .show();
            return;
        }
        ActivityCompat.requestPermissions(ParentActivity.this, new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE, android.Manifest.permission.READ_PHONE_STATE}, EXT_STORAGE_PERMISSION_REQ_CODE);
        return;
    }

}

private void onPermissionsNotGranted() {
    Toast.makeText(this, R.string.toast_permissions_not_granted, Toast.LENGTH_SHORT).show();
    Log.v("tom", "JERRY");
}


@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private void checkwriteStoragePermission() {
    if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
            DialogInterface.OnClickListener onClickListener = new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if (which == DialogInterface.BUTTON_POSITIVE) {

                        ActivityCompat.requestPermissions(ParentActivity.this, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, WRITE_EXTERNAL_STORAGE);
                        Log.v("tom", "TOM");
                    } else if (which == DialogInterface.BUTTON_NEGATIVE) {
                        onPermissionsNotGranted();
                        Log.v("tom", "JERRY");
                    }
                    dialog.dismiss();
                }
            };
            new AlertDialog.Builder(this)
                    .setTitle(R.string.permissions_title)
                    .setMessage(R.string.read_ext_permissions_message)
                    .setPositiveButton(R.string.btn_continue, onClickListener)
                    .setNegativeButton(R.string.btn_cancel, onClickListener)
                    .setCancelable(false)
                    .show();
            return;
        }
        ActivityCompat.requestPermissions(ParentActivity.this, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, WRITE_EXTERNAL_STORAGE);
        return;
    }

}

和

 private static final int WRITE_EXTERNAL_STORAGE = 4;
private static final int READ_PHONE_STATE = 3;

并且您可以在任何需要的地方调用该方法。

Answer 3

我猜你想要这样：

我想给出简单的解决方案：

在 Gradle 文件依赖项 {} 部分添加库：

compile 'com.karumi:dexter:4.1.0'

我在您的代码中自定义了一些更改，这些更改非常容易 understand.If 如果您有任何疑问，请随时问我。

  private void checkwriteStoragePermission() 
{

    new android.support.v7.app.AlertDialog.Builder(this)
            .setTitle(R.string.permissions_title)
            .setMessage(R.string.read_ext_permissions_message)
            .setPositiveButton(R.string.btn_continue, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                    Dexter.withActivity(MultipleBranchesActivity.this)
                            .withPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
                            .withListener(new PermissionListener() {
                                @Override
                                public void onPermissionGranted(PermissionGrantedResponse response) {
                                    Toast.makeText(MultipleBranchesActivity.this, "Permisson Granted", Toast.LENGTH_SHORT).show();
                                }

                                @Override
                                public void onPermissionDenied(PermissionDeniedResponse response) {
                                    Toast.makeText(MultipleBranchesActivity.this, "Permisson Denied", Toast.LENGTH_SHORT).show();

                                }

                                @Override
                                public void onPermissionRationaleShouldBeShown(PermissionRequest permission, PermissionToken token) {/* ... */}
                            }).check();

                }
            })
            .setNegativeButton(R.string.btn_cancel, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                }
            })
            .setCancelable(false)
            .show();


}

并调用您的方法。

权限对话框

Permission dialogs

java

android-manifest

android-permissions

android-studio