activity_fragment_lifecycle.png
- 在生命周期方法中添加打印
public class LifecycleFragment extends Fragment {
public static final String TAG = "LifecycleFragment";
@Override
public void onAttach(Context context) {
super.onAttach(context);
Log.d(TAG, "onAttach");
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "onCreate");
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
Log.d(TAG, "onCreateView");
View view = inflater.inflate(R.layout.lifecycle_fragment, container, false);
return view;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Log.d(TAG, "onActivityCreated");
}
@Override
public void onStart() {
super.onStart();
Log.d(TAG, "onStart");
}
@Override
public void onResume() {
super.onResume();
Log.d(TAG, "onResume");
}
@Override
public void onPause() {
super.onPause();
Log.d(TAG, "onPause");
}
@Override
public void onStop() {
super.onStop();
Log.d(TAG, "onStop");
}
@Override
public void onDestroyView() {
super.onDestroyView();
Log.d(TAG, "onDestroyView");
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy");
}
@Override
public void onDetach() {
super.onDetach();
Log.d(TAG, "onDetach");
}
}
- 布局文件中添加這個(gè)Fragment
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/news_title_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<fragment
android:id="@+id/news_title_fragment"
android:name="com.example.fragmenttest.LifecycleFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
- 運(yùn)行程序觀察打印
run_fragmenttest.png
- 點(diǎn)擊back鍵后打印
back_fragment.png
