Android 测试生命周期的APP

三个布局文件：

activity_main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center_vertical" >

<TextView
android:id="@+id/text_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="主Activty"
/>

<Button
android:id="@+id/start_normal_activity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="启动普通的Activity"
/>

<Button
android:id="@+id/start_dialog_activity"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_gravity="center_horizontal"
android:text="启动对话式的Activity"
/>

</LinearLayout>

normal_layout.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="普通的Activity"
/>

</LinearLayout>

dialog_layout.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_gravity="center_vertical"
android:text="对话框式的Activity"
/>

</LinearLayout>

三个Activity，其他两个不用添加代码

public class MainActivity extends Activity {

public static final String TAG = "MainActivity";

Button startNormalActivity;
Button startDialogActivity;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.v(TAG, "onCreate");
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
startNormalActivity = (Button) findViewById(R.id.start_normal_activity);
startDialogActivity = (Button) findViewById(R.id.start_dialog_activity);
startNormalActivity.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, NormalActivity.class);
startActivity(intent);
}
});
startDialogActivity.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, DialogActivity.class);
startActivity(intent);
}
});
}

@Override
protected void onStart() {
super.onStart();
Log.v(TAG, "onStart");
}

@Override
protected void onResume() {
super.onResume();
Log.v(TAG, "onResume");
}

@Override
protected void onPause() {
super.onPause();
Log.v(TAG, "onPause");
}

@Override
protected void onStop() {
super.onStop();
Log.v(TAG, "onStop");
}

@Override
protected void onDestroy() {
super.onDestroy();
Log.v(TAG, "onDestroy");
}

@Override
protected void onRestart() {
super.onRestart();
Log.v(TAG, "onRestart");
}
}

打开Eclipse启动APP，在LogCat输入tag:MainActivity，然后操作APP即可看到生命周期的变化。

如下图：