Android 使用Gallery实现Tab
main.xml布局文件:
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><Gallery android:id="@+id/gallery" android:layout_width="fill_parent"android:layout_height="wrap_content" android:layout_marginTop="30dp"android:unselectedAlpha="1" android:spacing="1dip" /></LinearLayout>
<?xml version="1.0" encoding="utf-8"?><resources> <declare-styleable name="Gallery"> <attr name="android:galleryItemBackground" /> </declare-styleable></resources>
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="hello">Hello World, Date!</string> <string name="app_name">丸子-Widget</string> </resources>
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"><gradient android:startColor="#FF1B1B1B" android:endColor="#FF969696"android:angle="90.0"></gradient></shape>
<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"><gradient android:startColor="#FF000000" android:endColor="#FF474747"android:angle="90.0"></gradient></shape>
package com.iaiai.activity;import java.util.Arrays;import java.util.Collections;import java.util.List;import android.app.Activity;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Color;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.TextView;/** * * <p> * Title: IaiaiActivity.java * </p> * <p> * E-Mail: 176291935@qq.com * </p> * <p> * QQ: 176291935 * </p> * <p> * Http: iaiai.iteye.com * </p> * <p> * Create time: 2011-6-26 * </p> * * @author 丸子 * @version 0.0.1 */public class IaiaiActivity extends Activity {private Gallery gallery;private TabAdapter textAdapter;private static final String[] PROGRAM_NAMES = { "中央一台", "中央二台", "中央三台","中央四台", "中央五台", "中央六台", "中央七台", "中央八台", };@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);gallery = (Gallery) findViewById(R.id.gallery);textAdapter = new TabAdapter(this, Arrays.asList(PROGRAM_NAMES));gallery.setAdapter(textAdapter);gallery.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {TabAdapter adapter = (TabAdapter) parent.getAdapter();adapter.setSelectedPos(position);}});}public class TabAdapter extends BaseAdapter {private Context mContext;private List<String> mList;private int mSelectedPos;public TabAdapter(Context context, List<String> list) {mContext = context;TypedArray a = obtainStyledAttributes(R.styleable.Gallery);a.recycle();if (list == null)list = Collections.emptyList();mList = list;}public void setSelectedPos(int pos) {if (pos != mSelectedPos) {mSelectedPos = pos;notifyDataSetChanged();}}public int getSelectedPos() {return mSelectedPos;}public int getCount() {return mList.size();}public Object getItem(int position) {return mList.get(position);}public long getItemId(int position) {return position;}public View getView(int position, View convertView, ViewGroup parent) {TextView text = null;if (convertView == null) {text = new TextView(mContext);} else {text = (TextView) convertView;}text.setTextColor(Color.WHITE);text.setText(mList.get(position));text.setLayoutParams(new Gallery.LayoutParams(102, 40));text.setGravity(Gravity.CENTER);if (position == mSelectedPos)text.setBackgroundResource(R.drawable.tab_button_select);elsetext.setBackgroundResource(R.drawable.tab_button_unselect);return text;}}}