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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      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.lifecycle;
     18 
     19 import android.app.Activity;
     20 import android.content.Intent;
     21 import android.os.Bundle;
     22 import android.view.View;
     23 import android.widget.TextView;
     24 
     25 import com.example.android.lifecycle.util.StatusTracker;
     26 import com.example.android.lifecycle.util.Utils;
     27 
     28 /**
     29  * Example Activity to demonstrate the lifecycle callback methods.
     30  */
     31 public class ActivityA extends Activity {
     32 
     33     private String mActivityName;
     34     private TextView mStatusView;
     35     private TextView mStatusAllView;
     36     private StatusTracker mStatusTracker = StatusTracker.getInstance();
     37 
     38     @Override
     39     public void onCreate(Bundle savedInstanceState) {
     40         super.onCreate(savedInstanceState);
     41         setContentView(R.layout.activity_a);
     42         mActivityName = getString(R.string.activity_a);
     43         mStatusView = (TextView)findViewById(R.id.status_view_a);
     44         mStatusAllView = (TextView)findViewById(R.id.status_view_all_a);
     45         mStatusTracker.setStatus(mActivityName, getString(R.string.on_create));
     46         Utils.printStatus(mStatusView, mStatusAllView);
     47     }
     48 
     49     @Override
     50     protected void onStart() {
     51         super.onStart();
     52         mStatusTracker.setStatus(mActivityName, getString(R.string.on_start));
     53         Utils.printStatus(mStatusView, mStatusAllView);
     54     }
     55 
     56     @Override
     57     protected void onRestart() {
     58         super.onRestart();
     59         mStatusTracker.setStatus(mActivityName, getString(R.string.on_restart));
     60         Utils.printStatus(mStatusView, mStatusAllView);
     61     }
     62 
     63     @Override
     64     protected void onResume() {
     65         super.onResume();
     66         mStatusTracker.setStatus(mActivityName, getString(R.string.on_resume));
     67         Utils.printStatus(mStatusView, mStatusAllView);
     68     }
     69 
     70     @Override
     71     protected void onPause() {
     72         super.onPause();
     73         mStatusTracker.setStatus(mActivityName, getString(R.string.on_pause));
     74         Utils.printStatus(mStatusView, mStatusAllView);
     75     }
     76 
     77     @Override
     78     protected void onStop() {
     79         super.onStop();
     80         mStatusTracker.setStatus(mActivityName, getString(R.string.on_stop));
     81     }
     82 
     83     @Override
     84     protected void onDestroy() {
     85         super.onDestroy();
     86         mStatusTracker.setStatus(mActivityName, getString(R.string.on_destroy));
     87         mStatusTracker.clear();
     88     }
     89 
     90     public void startDialog(View v) {
     91         Intent intent = new Intent(ActivityA.this, DialogActivity.class);
     92         startActivity(intent);
     93     }
     94 
     95     public void startActivityB(View v) {
     96         Intent intent = new Intent(ActivityA.this, ActivityB.class);
     97         startActivity(intent);
     98     }
     99 
    100     public void startActivityC(View v) {
    101         Intent intent = new Intent(ActivityA.this, ActivityC.class);
    102         startActivity(intent);
    103     }
    104 
    105     public void finishActivityA(View v) {
    106         ActivityA.this.finish();
    107     }
    108 
    109 }
    110