1 /* 2 * Copyright (C) 2014 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.wearable.speedtracker.ui; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.SharedPreferences; 22 import android.os.Bundle; 23 import android.preference.PreferenceManager; 24 import android.view.View; 25 import android.widget.TextView; 26 27 import com.example.android.wearable.speedtracker.R; 28 29 /** 30 * A simple activity that allows the user to start or stop recording of GPS location data. 31 */ 32 public class LocationSettingActivity extends Activity { 33 34 private static final String PREFS_KEY_SAVE_GPS = "save-gps"; 35 36 @Override onCreate(Bundle savedInstanceState)37 protected void onCreate(Bundle savedInstanceState) { 38 super.onCreate(savedInstanceState); 39 setContentView(R.layout.saving_activity); 40 TextView textView = (TextView) findViewById(R.id.textView); 41 textView.setText(getGpsRecordingStatusFromPreferences(this) ? R.string.stop_saving_gps 42 : R.string.start_saving_gps); 43 44 } 45 onClick(View view)46 public void onClick(View view) { 47 switch (view.getId()) { 48 case R.id.submitBtn: 49 saveGpsRecordingStatusToPreferences(LocationSettingActivity.this, 50 !getGpsRecordingStatusFromPreferences(this)); 51 break; 52 case R.id.cancelBtn: 53 break; 54 } 55 finish(); 56 } 57 58 /** 59 * Get the persisted value for whether the app should record the GPS location data or not. If 60 * there is no prior value persisted, it returns {@code false}. 61 */ getGpsRecordingStatusFromPreferences(Context context)62 public static boolean getGpsRecordingStatusFromPreferences(Context context) { 63 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(context); 64 return pref.getBoolean(PREFS_KEY_SAVE_GPS, false); 65 } 66 67 /** 68 * Persists the user selection to whether save the GPS location data or not. 69 */ saveGpsRecordingStatusToPreferences(Context context, boolean value)70 public static void saveGpsRecordingStatusToPreferences(Context context, boolean value) { 71 SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(context); 72 pref.edit().putBoolean(PREFS_KEY_SAVE_GPS, value).apply(); 73 74 } 75 } 76