Activity声明周期2

FirstActivity.java

 1 import android.os.Bundle;

 2 import android.view.View;

 3 import android.view.View.OnClickListener;

 4 import android.widget.Button;

 5 import android.app.Activity;

 6 import android.content.Intent;

 7 

 8 public class FirstActivity extends Activity {

 9     private Button myButton;

10     @Override

11     protected void onCreate(Bundle savedInstanceState) {

12         System.out.println("FirstActivity ---> onCreate     ");

13         super.onCreate(savedInstanceState);

14         setContentView(R.layout.activity_first);

15         myButton = (Button) findViewById(R.id.myButton);

16         myButton.setOnClickListener(new ButtonListener());

17     }

18     

19     @Override

20     protected void onDestroy() {

21         System.out.println("FirstAcvity --->onDestory");

22         super.onDestroy();

23     }

24 

25     @Override

26     protected void onPause() {

27         System.out.println("FirstAcvity --->onPause");

28         super.onPause();

29     }

30 

31     @Override

32     protected void onRestart() {

33         System.out.println("FirstAcvity --->onRestart");

34         super.onRestart();

35     }

36 

37     @Override

38     protected void onResume() {

39         System.out.println("FirstAcvity --->onResume");

40         super.onResume();

41     }

42 

43     @Override

44     protected void onStart() {

45         System.out.println("FirstAcvity --->onStart");

46         super.onStart();

47     }

48 

49     @Override

50     protected void onStop() {

51         System.out.println("FirstAcvity --->onStop");

52         super.onStop();

53     }

54     

55     

56     class ButtonListener implements OnClickListener{

57 

58         @Override

59         public void onClick(View v) {

60             Intent intent = new Intent();

61             intent.setClass(FirstActivity.this, SecondActivity.class);

62             FirstActivity.this.startActivity(intent);

63         }

64         

65     }

66 }

 activity_activity.xml

 1 <?xml version="1.0" encoding="utf-8"?>

 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

 3     android:orientation="vertical"

 4     android:layout_width="fill_parent"

 5     android:layout_height="fill_parent"

 6     >

 7 <TextView  

 8     android:layout_width="fill_parent" 

 9     android:layout_height="wrap_content" 

10     android:text="@string/hello_world"

11     />

12 <Button

13     android:id="@+id/myButton"

14     android:layout_width="fill_parent"

15     android:layout_height="wrap_content"

16     android:text="@string/first_button"

17     />

18 </LinearLayout>

 

SecondActivity.java

 1 import android.app.Activity;

 2 import android.content.Intent;

 3 import android.os.Bundle;

 4 import android.view.View;

 5 import android.view.View.OnClickListener;

 6 import android.widget.Button;

 7 

 8 public class SecondActivity extends Activity{

 9     private Button secondButton;

10     @Override

11     protected void onCreate(Bundle savedInstanceState) {

12         System.out.println("SecondActivity--->onCreate");

13         super.onCreate(savedInstanceState);

14         setContentView(R.layout.activity_second);

15         

16         secondButton = (Button)findViewById(R.id.secondButton);

17         secondButton.setOnClickListener(new ButtonListener());

18     }

19     

20     

21     @Override

22     protected void onDestroy() {

23         System.out.println("SecondActivity--->onDestory");

24         super.onDestroy();

25     }

26 

27     @Override

28     protected void onPause() {

29         System.out.println("SecondActivity--->onPause");

30         super.onPause();

31     }

32 

33     @Override

34     protected void onRestart() {

35         System.out.println("SecondActivity--->onRestart");

36         super.onRestart();

37     }

38 

39     @Override

40     protected void onResume() {

41         System.out.println("SecondActivity--->onResume");

42         super.onResume();

43     }

44 

45     @Override

46     protected void onStart() {

47         System.out.println("SecondActivity--->onStart");

48         super.onStart();

49     }

50 

51     @Override

52     protected void onStop() {

53         System.out.println("SecondActivity--->onStop");

54         super.onStop();

55     }

56     

57     

58     class ButtonListener implements OnClickListener{

59 

60         @Override

61         public void onClick(View v) {

62             Intent intent = new Intent();

63             intent.setClass(SecondActivity.this, FirstActivity.class);

64             SecondActivity.this.startActivity(intent);

65         }

66         

67     }

68 }

 

activity_second.xml

 1 <?xml version="1.0" encoding="utf-8"?>

 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

 3     android:orientation="vertical"

 4     android:layout_width="fill_parent"

 5     android:layout_height="wrap_content"

 6     >

 7     <TextView 

 8         android:layout_width="fill_parent"

 9         android:layout_height="wrap_content"

10         />

11        <Button 

12            android:id="@+id/secondButton"

13            android:layout_width="fill_parent"

14            android:layout_height="wrap_content"

15            android:text="@string/second_button"

16            />

17 </LinearLayout>

 

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.mars.activity05"

    android:versionCode="1"

    android:versionName="1.0" >



    <uses-sdk

        android:minSdkVersion="4"

        android:targetSdkVersion="18" />



    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

        <activity

            android:name="com.mars.activity05.FirstActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />



                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity android:name=".SecondActivity"

                  android:label="SecondActivity"

                  android:theme="@android:style/Theme.Dialog"/>

        <!--android:theme="@android:style/Theme.Dialog"/>,表示将这个Activity的格式设置为，对话框的形式-->

    </application>



</manifest>

 

<?xml version="1.0" encoding="utf-8"?>

<resources>



    <string name="app_name">Activity05</string>

    <string name="action_settings">Settings</string>

    <string name="hello_world">Hello world!</string>

    <string name="first_button">FirstButton</string>

    <string name="second_button">SecondButton</string>



</resources>