重载Activity类
[java] public class GinwaveIMusicFrmaeHanderActivity extends Activity {
private LayoutInflater mInflater;
private Button mFrameTopLeftButton;
private TextView mFrameTopMiddleTextView;
private Button mFrameTopRightButton;
private LinearLayout mLinearLayout;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
}
public void setupViews(int id){
mInflater = (LayoutInflater)this.getLayoutInflater();
mLinearLayout = (LinearLayout)mInflater.inflate(R.layout.frame_layout_header, null);
mFrameTopLeftButton = (Button)mLinearLayout.findViewById(R.id.frame_top_left);
mFrameTopMiddleTextView = (TextView)mLinearLayout.findViewById(R.id.frame_top_middle);
mFrameTopRightButton = (Button)mLinearLayout.findViewById(R.id.frame_top_right);
mFrameTopLeftButton.setOnClickListener(new ClickFrameTopViewListener());
mFrameTopRightButton.setOnClickListener(new ClickFrameTopViewListener());
View localLinear = (View)mInflater.inflate(id, null);
mLinearLayout.addView(localLinear, mLinearLayout.getChildCount());
setContentView(mLinearLayout);
}
public void setFrameTopLeftButtonDTI(int pDrawableId, String pText){
mFrameTopLeftButton.setVisibility(View.VISIBLE);
mFrameTopLeftButton.setBackgroundResource(pDrawableId);
mFrameTopLeftButton.setText(pText);
}
public void setFrameTopLeftButtonTI(String pText){
mFrameTopLeftButton.setVisibility(View.VISIBLE);
mFrameTopLeftButton.setText(pText);
}
public void setFrameTopMiddleTextView(String pText){
mFrameTopMiddleTextView.setText(pText);
}
public void setFrameTopRightButtonDTI(int pDrawableId, String pText){
mFrameTopRightButton.setVisibility(View.VISIBLE);
mFrameTopRightButton.setBackgroundResource(pDrawableId);
mFrameTopRightButton.setText(pText);
}
public void setFrameTopRightButtonTI(String pText){
mFrameTopRightButton.setVisibility(View.VISIBLE);
mFrameTopRightButton.setText(pText);
}
public void handleClickOnFrameTopLeftButton(){
}
public void handleClickOnFrameTopRightButton(){
}
class ClickFrameTopViewListener implements OnClickListener{
public void onClick(View v) {
// TODO Auto-generated method stub
if((TextView)v == mFrameTopLeftButton){
handleClickOnFrameTopLeftButton();
}
if((TextView)v == mFrameTopRightButton){
handleClickOnFrameTopRightButton();
}
}
}
}
public class GinwaveIMusicFrmaeHanderActivity extends Activity {
private LayoutInflater mInflater;
private Button mFrameTopLeftButton;
private TextView mFrameTopMiddleTextView;
private Button mFrameTopRightButton;
private LinearLayout mLinearLayout;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setVolumeControlStream(AudioManager.STREAM_MUSIC);
}
public void setupViews(int id){
mInflater = (LayoutInflater)this.getLayoutInflater();
mLinearLayout = (LinearLayout)mInflater.inflate(R.layout.frame_layout_header, null);
mFrameTopLeftButton = (Button)mLinearLayout.findViewById(R.id.frame_top_left);
mFrameTopMiddleTextView = (TextView)mLinearLayout.findViewById(R.id.frame_top_middle);
mFrameTopRightButton = (Button)mLinearLayout.findViewById(R.id.frame_top_right);
mFrameTopLeftButton.setOnClickListener(new ClickFrameTopViewListener());
mFrameTopRightButton.setOnClickListener(new ClickFrameTopViewListener());
View localLinear = (View)mInflater.inflate(id, null);
mLinearLayout.addView(localLinear, mLinearLayout.getChildCount());
setContentView(mLinearLayout);
}
public void setFrameTopLeftButtonDTI(int pDrawableId, String pText){
mFrameTopLeftButton.setVisibility(View.VISIBLE);
mFrameTopLeftButton.setBackgroundResource(pDrawableId);
mFrameTopLeftButton.setText(pText);
}
public void setFrameTopLeftButtonTI(String pText){
mFrameTopLeftButton.setVisibility(View.VISIBLE);
mFrameTopLeftButton.setText(pText);
}
public void setFrameTopMiddleTextView(String pText){
mFrameTopMiddleTextView.setText(pText);
}
public void setFrameTopRightButtonDTI(int pDrawableId, String pText){
mFrameTopRightButton.setVisibility(View.VISIBLE);
mFrameTopRightButton.setBackgroundResource(pDrawableId);
mFrameTopRightButton.setText(pText);
}
public void setFrameTopRightButtonTI(String pText){
mFrameTopRightButton.setVisibility(View.VISIBLE);
mFrameTopRightButton.setText(pText);
}
public void handleClickOnFrameTopLeftButton(){
}
public void handleClickOnFrameTopRightButton(){
}
class ClickFrameTopViewListener implements OnClickListener{
public void onClick(View v) {
// TODO Auto-generated method stub
if((TextView)v == mFrameTopLeftButton){
handleClickOnFrameTopLeftButton();
}
if((TextView)v == mFrameTopRightButton){
handleClickOnFrameTopRightButton();
}
}
}
}继承自基类的Activity
[java] public class ListViewPositionTest extends GinwaveIMusicFrmaeHanderActivity {
/** Called when the activity is first created. */
private ListView mList;
private ArrayAdapter<String> mAdapter;
private List<String> mListData;
private LayoutInflater mInflater;
private LinearLayout mLinearLayout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setupViews(R.layout.main2);
mList = (ListView)mLinearLayout.findViewById(R.id.playlist_lv);
initListData();
PlayListAdapter p = new PlayListAdapter();
mList.setAdapter(p);
}
private void initListData(){
mListData = new ArrayList<String>();
for( int i =0; i < 6; i++){
mListData.add("This is " + i + " item");
}
}
public void setupViews(int id){
mInflater = (LayoutInflater)this.getLayoutInflater();
mLinearLayout = (LinearLayout)mInflater.inflate(R.layout.frame_layout_header, null);
View localLinear = (View)mInflater.inflate(id, null);
mLinearLayout.addView(localLinear, mLinearLayout.getChildCount());
setContentView(mLinearLayout);
}
public class PlayListAdapter extends BaseAdapter{
public int getCount() {
// TODO Auto-generated method stub
return mListData.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return mListData.get(position);
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LinearLayout localLinear;
String title = mListData.get(position);
localLinear = (LinearLayout)mInflater.inflate(R.layout.playlist_vlist, null);
TextView localTitle = (TextView)localLinear.findViewById(R.id.title);
localTitle.setText(title);
if(position == 0){
ImageView localImage = (ImageView)localLinear.findViewById(R.id.arrowHead);
localImage.setVisibility(View.INVISIBLE);
}
return localLinear;
}
}
}
public class ListViewPositionTest extends GinwaveIMusicFrmaeHanderActivity {
/** Called when the activity is first created. */
private ListView mList;
private ArrayAdapter<String> mAdapter;
private List<String> mListData;
private LayoutInflater mInflater;
private LinearLayout mLinearLayout;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setupViews(R.layout.main2);
mList = (ListView)mLinearLayout.findViewById(R.id.playlist_lv);
initListData();
PlayListAdapter p = new PlayListAdapter();
mList.setAdapter(p);
}
private void initListData(){
mListData = new ArrayList<String>();
for( int i =0; i < 6; i++){
mListData.add("This is " + i + " item");
}
}
public void setupViews(int id){
mInflater = (LayoutInflater)this.getLayoutInflater();
mLinearLayout = (LinearLayout)mInflater.inflate(R.layout.frame_layout_header, null);
View localLinear = (View)mInflater.inflate(id, null);
mLinearLayout.addView(localLinear, mLinearLayout.getChildCount());
setContentView(mLinearLayout);
}
public class PlayListAdapter extends BaseAdapter{
public int getCount() {
// TODO Auto-generated method stub
return mListData.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return mListData.get(position);
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LinearLayout localLinear;
String title = mListData.get(position);
localLinear = (LinearLayout)mInflater.inflate(R.layout.playlist_vlist, null);
TextView localTitle = (TextView)localLinear.findViewById(R.id.title);
localTitle.setText(title);
if(position == 0){
ImageView localImage = (ImageView)localLinear.findViewById(R.id.arrowHead);
localImage.setVisibility(View.INVISIBLE);
}
return localLinear;
}
}
}main1.xml：
[html] <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ListView
android:id="@+id/playlist_lv"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/list_bg"
android:headerDividersEnabled="false"
android:footerDividersEnabled="true"
android:divider="@drawable/list_divider"
/>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<ListView
android:id="@+id/playlist_lv"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/list_bg"
android:headerDividersEnabled="false"
android:footerDividersEnabled="true"
android:divider="@drawable/list_divider"
/>
</RelativeLayout>main2.xml：
[html] <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical">
<ListView android:id="@+id/playlist_lv" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="@drawable/list_bg"
android:headerDividersEnabled="false" android:footerDividersEnabled="true"
android:divider="@drawable/list_divider" />
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical">
<ListView android:id="@+id/playlist_lv" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="@drawable/list_bg"
android:headerDividersEnabled="false" android:footerDividersEnabled="true"
android:divider="@drawable/list_divider" />
</LinearLayout>
不知道为什么在继承自基类的Activity中使用main1.xml布局，ListView可以显示最下边的线，使用main2.xml ListView不能显示最下边的线，如下图：
摘自 xiaoxiaobian3310903的专栏
