Source code
package android.support.v4.app;
import android.content.Context;
import android.os.Bundle;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.FrameLayout;
import android.widget.FrameLayout.LayoutParams;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
public class ListFragment extends Fragment {
static final int INTERNAL_EMPTY_ID = 16711681;
static final int INTERNAL_LIST_CONTAINER_ID = 16711683;
static final int INTERNAL_PROGRESS_CONTAINER_ID = 16711682;
ListAdapter mAdapter;
CharSequence mEmptyText;
View mEmptyView;
private final Handler mHandler = new Handler();
ListView mList;
View mListContainer;
boolean mListShown;
private final OnItemClickListener mOnClickListener = new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
ListFragment.this.onListItemClick((ListView) parent, v, position, id);
}
};
View mProgressContainer;
private final Runnable mRequestFocus = new Runnable() {
public void run() {
ListFragment.this.mList.focusableViewAvailable(ListFragment.this.mList);
}
};
TextView mStandardEmptyView;
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Context context = getActivity();
FrameLayout root = new FrameLayout(context);
LinearLayout pframe = new LinearLayout(context);
pframe.setId(INTERNAL_PROGRESS_CONTAINER_ID);
pframe.setOrientation(1);
pframe.setVisibility(8);
pframe.setGravity(17);
pframe.addView(new ProgressBar(context, null, 16842874), new LayoutParams(-2, -2));
root.addView(pframe, new LayoutParams(-1, -1));
FrameLayout lframe = new FrameLayout(context);
lframe.setId(INTERNAL_LIST_CONTAINER_ID);
TextView tv = new TextView(getActivity());
tv.setId(INTERNAL_EMPTY_ID);
tv.setGravity(17);
lframe.addView(tv, new LayoutParams(-1, -1));
ListView lv = new ListView(getActivity());
lv.setId(16908298);
lv.setDrawSelectorOnTop(false);
lframe.addView(lv, new LayoutParams(-1, -1));
root.addView(lframe, new LayoutParams(-1, -1));
root.setLayoutParams(new LayoutParams(-1, -1));
return root;
}
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ensureList();
}
public void onDestroyView() {
this.mHandler.removeCallbacks(this.mRequestFocus);
this.mList = null;
this.mListShown = false;
this.mListContainer = null;
this.mProgressContainer = null;
this.mEmptyView = null;
this.mStandardEmptyView = null;
super.onDestroyView();
}
public void onListItemClick(ListView l, View v, int position, long id) {
}
public void setListAdapter(ListAdapter adapter) {
boolean z = false;
boolean hadAdapter;
if (this.mAdapter != null) {
hadAdapter = true;
} else {
hadAdapter = false;
}
this.mAdapter = adapter;
if (this.mList != null) {
this.mList.setAdapter(adapter);
if (!this.mListShown && !hadAdapter) {
if (getView().getWindowToken() != null) {
z = true;
}
setListShown(true, z);
}
}
}
public void setSelection(int position) {
ensureList();
this.mList.setSelection(position);
}
public int getSelectedItemPosition() {
ensureList();
return this.mList.getSelectedItemPosition();
}
public long getSelectedItemId() {
ensureList();
return this.mList.getSelectedItemId();
}
public ListView getListView() {
ensureList();
return this.mList;
}
public void setEmptyText(CharSequence text) {
ensureList();
if (this.mStandardEmptyView == null) {
throw new IllegalStateException("Can't be used with a custom content view");
}
this.mStandardEmptyView.setText(text);
if (this.mEmptyText == null) {
this.mList.setEmptyView(this.mStandardEmptyView);
}
this.mEmptyText = text;
}
public void setListShown(boolean shown) {
setListShown(shown, true);
}
public void setListShownNoAnimation(boolean shown) {
setListShown(shown, false);
}
private void setListShown(boolean shown, boolean animate) {
ensureList();
if (this.mProgressContainer == null) {
throw new IllegalStateException("Can't be used with a custom content view");
} else if (this.mListShown != shown) {
this.mListShown = shown;
if (shown) {
if (animate) {
this.mProgressContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), 17432577));
this.mListContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), 17432576));
} else {
this.mProgressContainer.clearAnimation();
this.mListContainer.clearAnimation();
}
this.mProgressContainer.setVisibility(8);
this.mListContainer.setVisibility(0);
return;
}
if (animate) {
this.mProgressContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), 17432576));
this.mListContainer.startAnimation(AnimationUtils.loadAnimation(getActivity(), 17432577));
} else {
this.mProgressContainer.clearAnimation();
this.mListContainer.clearAnimation();
}
this.mProgressContainer.setVisibility(0);
this.mListContainer.setVisibility(8);
}
}
public ListAdapter getListAdapter() {
return this.mAdapter;
}
private void ensureList() {
if (this.mList == null) {
View root = getView();
if (root == null) {
throw new IllegalStateException("Content view not yet created");
}
if (root instanceof ListView) {
this.mList = (ListView) root;
} else {
this.mStandardEmptyView = (TextView) root.findViewById(INTERNAL_EMPTY_ID);
if (this.mStandardEmptyView == null) {
this.mEmptyView = root.findViewById(16908292);
} else {
this.mStandardEmptyView.setVisibility(8);
}
this.mProgressContainer = root.findViewById(INTERNAL_PROGRESS_CONTAINER_ID);
this.mListContainer = root.findViewById(INTERNAL_LIST_CONTAINER_ID);
View rawListView = root.findViewById(16908298);
if (rawListView instanceof ListView) {
this.mList = (ListView) rawListView;
if (this.mEmptyView != null) {
this.mList.setEmptyView(this.mEmptyView);
} else if (this.mEmptyText != null) {
this.mStandardEmptyView.setText(this.mEmptyText);
this.mList.setEmptyView(this.mStandardEmptyView);
}
} else if (rawListView == null) {
throw new RuntimeException("Your content must have a ListView whose id attribute is 'android.R.id.list'");
} else {
throw new RuntimeException("Content has view with id attribute 'android.R.id.list' that is not a ListView class");
}
}
this.mListShown = true;
this.mList.setOnItemClickListener(this.mOnClickListener);
if (this.mAdapter != null) {
ListAdapter adapter = this.mAdapter;
this.mAdapter = null;
setListAdapter(adapter);
} else if (this.mProgressContainer != null) {
setListShown(false, false);
}
this.mHandler.post(this.mRequestFocus);
}
}
}