Miles' Blog

天涯何處無幹話，何必要講實務話

Source Code

使用兩個 Activity 和 Fragment 互傳做測試；另外並沒有使用 Support Library，以下為原始碼：

Main.java

public class Main extends Activity {
    private static final String TAG = Main.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onCreate");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                                .add(R.id.container, new MainFragment())
                                .commit();
        }
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        Log.d(TAG, "onSaveInstanceState");
        super.onSaveInstanceState(outState);
    }

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

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

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

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.d(TAG, "onConfigurationChanged");
        super.onConfigurationChanged(newConfig);
    }

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

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

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

    @Override
    protected void onPostResume() {
        Log.d(TAG, "onPostResume");
        super.onPostResume();
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onPostCreate");
        super.onPostCreate(savedInstanceState);
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        Log.d(TAG, "onRestoreInstanceState");
        super.onRestoreInstanceState(savedInstanceState);
    }

    @Override
    public void onAttachFragment(Fragment fragment) {
        Log.d(TAG, "onAttachFragment");
        super.onAttachFragment(fragment);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.d(TAG, "onActivityResult, requestCode: " + requestCode + " , resultCode: " + resultCode);
        super.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        Log.d(TAG, "onCreateOptionsMenu");
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        Log.d(TAG, "onPrepareOptionsMenu");
        return super.onPrepareOptionsMenu(menu);
    }
}

Sub.java

public class Sub extends Activity {
    private static final String TAG = Sub.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onCreate");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sub);

        if (savedInstanceState == null) {
            getFragmentManager().beginTransaction()
                                .add(R.id.container, new SubFragment())
                                .commit();
        }
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        Log.d(TAG, "onSaveInstanceState");
        super.onSaveInstanceState(outState);
    }

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

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

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

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.d(TAG, "onConfigurationChanged");
        super.onConfigurationChanged(newConfig);
    }

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

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

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

    @Override
    protected void onPostResume() {
        Log.d(TAG, "onPostResume");
        super.onPostResume();
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onPostCreate");
        super.onPostCreate(savedInstanceState);
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        Log.d(TAG, "onRestoreInstanceState");
        super.onRestoreInstanceState(savedInstanceState);
    }

    @Override
    public void onAttachFragment(Fragment fragment) {
        Log.d(TAG, "onAttachFragment");
        super.onAttachFragment(fragment);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.d(TAG, "onActivityResult, requestCode: " + requestCode + " , resultCode: " + resultCode);
        super.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        Log.d(TAG, "onCreateOptionsMenu");
        getMenuInflater().inflate(R.menu.sub, menu);
        return true;
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        Log.d(TAG, "onPrepareOptionsMenu");
        return super.onPrepareOptionsMenu(menu);
    }

}

Main.java 和 Sub.java 的內容幾乎相同，只有套用的 layout 和呼叫 Fragment 不同。

以下為監看的Callback列表(按名稱排序)

  • protected void onActivityResult(int requestCode, int resultCode, Intent data)
  • public void onAttachFragment(Fragment fragment)
  • public void onConfigurationChanged(Configuration newConfig)
  • protected void onCreate(Bundle savedInstanceState)
  • public boolean onCreateOptionsMenu(Menu menu)
  • protected void onDestroy()
  • protected void onPause()
  • protected void onPostCreate(Bundle savedInstanceState)
  • protected void onPostResume()
  • public boolean onPrepareOptionsMenu(Menu menu)
  • protected void onRestart()
  • protected void onRestoreInstanceState(Bundle savedInstanceState)
  • protected void onResume()
  • protected void onSaveInstanceState(Bundle outState)
  • protected void onStart()
  • protected void onStop()

MainFragment.java

public class MainFragment extends Fragment {
    private static final String TAG = MainFragment.class.getSimpleName();

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        Log.d(TAG, "onCreateView");

        View rootView = inflater.inflate(R.layout.fragment_main, container, false);

        View finish = rootView.findViewById(R.id.finish);
        finish.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getActivity().finish();
            }
        });

        View withoutReturn = rootView.findViewById(R.id.withoutReturn);
        withoutReturn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(getActivity(), Sub.class);
                startActivity(intent);
            }
        });

        View withReturn = rootView.findViewById(R.id.withReturn);
        withReturn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(getActivity(), Sub.class);
                startActivityForResult(intent, 10);
            }
        });

        return rootView;
    }

    @Override
    public void onHiddenChanged(boolean hidden) {
        Log.d(TAG, "onHiddenChanged");
        super.onHiddenChanged(hidden);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.d(TAG, "onActivityResult, requestCode: " + requestCode + " , resultCode: " + resultCode);
        super.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onAttach(Activity activity) {
        Log.d(TAG, "onAttach");
        super.onAttach(activity);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onCreate");
        super.onCreate(savedInstanceState);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        Log.d(TAG, "onViewCreated");
        super.onViewCreated(view, savedInstanceState);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        Log.d(TAG, "onActivityCreated");
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onStart() {
        Log.d(TAG, "onStart");
        super.onStart();
    }

    @Override
    public void onResume() {
        Log.d(TAG, "onResume");
        super.onResume();
    }

    @Override
    public void onViewStateRestored(Bundle savedInstanceState) {
        Log.d(TAG, "onViewStateRestored");
        super.onViewStateRestored(savedInstanceState);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        Log.d(TAG, "onSaveInstanceState");
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.d(TAG, "onConfigurationChanged");
        super.onConfigurationChanged(newConfig);
    }

    @Override
    public void onPause() {
        Log.d(TAG, "onPause");
        super.onPause();
    }

    @Override
    public void onStop() {
        Log.d(TAG, "onStop");
        super.onStop();
    }

    @Override
    public void onDestroyView() {
        Log.d(TAG, "onDestroyView");
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        Log.d(TAG, "onDestroy");
        super.onDestroy();
    }

    @Override
    public void onDetach() {
        Log.d(TAG, "onDetach");
        super.onDetach();
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        Log.d(TAG, "onCreateOptionsMenu");
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public void onPrepareOptionsMenu(Menu menu) {
        Log.d(TAG, "onPrepareOptionsMenu");
        super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void onDestroyOptionsMenu() {
        Log.d(TAG, "onDestroyOptionsMenu");
        super.onDestroyOptionsMenu();
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        Log.d(TAG, "onCreateContextMenu");
        super.onCreateContextMenu(menu, v, menuInfo);
    }
}

fragment_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">

    <Button
        android:id="@+id/finish"
        android:text="@string/main_button_finish"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/withoutReturn"
        android:text="@string/main_button_without_return"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/withReturn"
        android:text="@string/main_button_with_return"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

SubFragment.java

public class SubFragment extends Fragment {
    private static final String TAG = SubFragment.class.getSimpleName();

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_sub, container, false);

        View finish = rootView.findViewById(R.id.finish);
        finish.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                getActivity().finish();
            }
        });

        View hasReturn = rootView.findViewById(R.id.hasReturn);
        hasReturn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent();
                intent.putExtra("return", "I am return");
                getActivity().setResult(10, intent);
                getActivity().finish();
            }
        });

        return rootView;
    }

    @Override
    public void onHiddenChanged(boolean hidden) {
        Log.d(TAG, "onHiddenChanged");
        super.onHiddenChanged(hidden);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.d(TAG, "onActivityResult, requestCode: " + requestCode + " , resultCode: " + resultCode);
        super.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    public void onAttach(Activity activity) {
        Log.d(TAG, "onAttach");
        super.onAttach(activity);
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        Log.d(TAG, "onCreate");
        super.onCreate(savedInstanceState);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        Log.d(TAG, "onViewCreated");
        super.onViewCreated(view, savedInstanceState);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        Log.d(TAG, "onActivityCreated");
        super.onActivityCreated(savedInstanceState);
    }

    @Override
    public void onStart() {
        Log.d(TAG, "onStart");
        super.onStart();
    }

    @Override
    public void onResume() {
        Log.d(TAG, "onResume");
        super.onResume();
    }

    @Override
    public void onViewStateRestored(Bundle savedInstanceState) {
        Log.d(TAG, "onViewStateRestored");
        super.onViewStateRestored(savedInstanceState);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        Log.d(TAG, "onSaveInstanceState");
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        Log.d(TAG, "onConfigurationChanged");
        super.onConfigurationChanged(newConfig);
    }

    @Override
    public void onPause() {
        Log.d(TAG, "onPause");
        super.onPause();
    }

    @Override
    public void onStop() {
        Log.d(TAG, "onStop");
        super.onStop();
    }

    @Override
    public void onDestroyView() {
        Log.d(TAG, "onDestroyView");
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        Log.d(TAG, "onDestroy");
        super.onDestroy();
    }

    @Override
    public void onDetach() {
        Log.d(TAG, "onDetach");
        super.onDetach();
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        Log.d(TAG, "onCreateOptionsMenu");
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public void onPrepareOptionsMenu(Menu menu) {
        Log.d(TAG, "onPrepareOptionsMenu");
        super.onPrepareOptionsMenu(menu);
    }

    @Override
    public void onDestroyOptionsMenu() {
        Log.d(TAG, "onDestroyOptionsMenu");
        super.onDestroyOptionsMenu();
    }

    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        Log.d(TAG, "onCreateContextMenu");
        super.onCreateContextMenu(menu, v, menuInfo);
    }
}

fragment_sub.xml

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

    <Button
        android:id="@+id/finish"
        android:text="@string/sub_button_finish"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/hasReturn"
        android:text="@string/sub_button_has_return"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

Fragment 因 Button 不一樣，所以內容是 Button 的部分不同而已

而 Fragment 跟 Activity 要監聽的部分也有點不大一樣：

  • public void onActivityCreated(Bundle savedInstanceState)
  • public void onActivityResult(int requestCode, int resultCode, Intent data)
  • public void onAttach(Activity activity)
  • public void onConfigurationChanged(Configuration newConfig)
  • public void onCreate(Bundle savedInstanceState)
  • public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
  • public void onCreateOptionsMenu(Menu menu, MenuInflater inflater)
  • public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
  • public void onDestroy()
  • public void onDestroyOptionsMenu()
  • public void onDestroyView()
  • public void onDetach()
  • public void onHiddenChanged(boolean hidden)
  • public void onPause()
  • public void onPrepareOptionsMenu(Menu menu)
  • public void onResume()
  • public void onSaveInstanceState(Bundle outState)
  • public void onStart()
  • public void onStop()
  • public void onViewCreated(View view, Bundle savedInstanceState)
  • public void onViewStateRestored(Bundle savedInstanceState) (此方法有API限制API Level 17 Required，不過低版本只會報警告，仍然可以繼續執行。)
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