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RuntimePermissionsWear / Application / src / com.example.android.wearable.runtimepermissions /

PhonePermissionRequestActivity.java

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/*
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 * Copyright (C) 2015 Google Inc. All Rights Reserved.
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.wearable.runtimepermissions;
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import android.Manifest;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.os.Bundle;
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import android.support.annotation.NonNull;
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import android.support.v4.app.ActivityCompat;
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import android.support.v7.app.AppCompatActivity;
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import android.util.Log;
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import android.view.View;
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/**
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 * This is a simple splash screen (activity) for giving more details on why the user should approve
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 * phone permissions for storage. If they choose to move forward, the permission screen
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 * is brought up. Either way (approve or disapprove), this will exit to the MainPhoneActivity after
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 * they are finished with their final decision.
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 *
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 * If this activity is started by our service (IncomingRequestPhoneService) it is marked via an
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 * extra (MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR). That service only starts
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 * this activity if the phone permission hasn't been approved for the data wear is trying to access.
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 * When the user decides within this Activity what to do with the permission request, it closes and
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 * opens the MainPhoneActivity (to maintain the app experience). It also again passes along the same
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 * extra (MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR) to alert MainPhoneActivity to
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 * send the results of the user's decision to the wear device.
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 */
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public class PhonePermissionRequestActivity extends AppCompatActivity implements
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        ActivityCompat.OnRequestPermissionsResultCallback {
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    private static final String TAG = "PhoneRationale";
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    /* Id to identify Location permission request. */
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    private static final int PERMISSION_REQUEST_READ_STORAGE = 1;
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    @Override
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    protected void onCreate(Bundle savedInstanceState) {
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        super.onCreate(savedInstanceState);
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        // If permissions granted, we start the main activity (shut this activity down).
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        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)
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                == PackageManager.PERMISSION_GRANTED) {
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            startMainActivity();
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        }
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        setContentView(R.layout.activity_phone_permission_request);
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    }
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    public void onClickApprovePermissionRequest(View view) {
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        Log.d(TAG, "onClickApprovePermissionRequest()");
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        // On 23+ (M+) devices, External storage permission not granted. Request permission.
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        ActivityCompat.requestPermissions(
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                this,
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                new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
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                PERMISSION_REQUEST_READ_STORAGE);
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    }
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    public void onClickDenyPermissionRequest(View view) {
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        Log.d(TAG, "onClickDenyPermissionRequest()");
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        startMainActivity();
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    }
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    /*
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     * Callback received when a permissions request has been completed.
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     */
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    @Override
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    public void onRequestPermissionsResult(
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            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
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        String permissionResult = "Request code: " + requestCode + ", Permissions: " + permissions
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                + ", Results: " + grantResults;
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        Log.d(TAG, "onRequestPermissionsResult(): " + permissionResult);
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        if (requestCode == PERMISSION_REQUEST_READ_STORAGE) {
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            // Close activity regardless of user's decision (decision picked up in main activity).
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            startMainActivity();
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        }
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    }
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    private void startMainActivity() {
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        Intent mainActivityIntent = new Intent(this, MainPhoneActivity.class);
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        /*
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         * If service started this Activity (b/c wear requested data where permissions were not
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         * approved), tells MainPhoneActivity to send results to wear device (via this extra).
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         */
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        boolean serviceStartedActivity = getIntent().getBooleanExtra(
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                MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR, false);
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        if (serviceStartedActivity) {
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           mainActivityIntent.putExtra(
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                   MainPhoneActivity.EXTRA_PROMPT_PERMISSION_FROM_WEAR, true);
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        }
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        startActivity(mainActivityIntent);
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    }
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}
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