学步园

package com.sxy.GridView;</p> <p>import com.example.s_demo.R;<br /> import android.app.Activity;<br /> import android.content.Context;<br /> import android.graphics.Color;<br /> import android.graphics.Typeface;<br /> import android.os.Bundle;<br /> import android.util.Log;<br /> import android.view.Gravity;<br /> import android.view.View;<br /> import android.view.ViewGroup;<br /> import android.widget.AdapterView;<br /> import android.widget.BaseAdapter;<br /> import android.widget.GridView;<br /> import android.widget.TextView;<br /> import android.widget.AdapterView.OnItemClickListener;</p> <p>public class MyGridView_MainActivity extends Activity {</p> <p> private static final String TAG = "sxy";<br /> private GridView mygridview_GridV = null;<br /> private Typeface typeFace = null;</p> <p> public MyGridView_MainActivity() {<br /> // TODO Auto-generated constructor stub<br /> }</p> <p> @Override<br /> protected void onCreate(Bundle savedInstanceState) {<br /> // TODO Auto-generated method stub<br /> super.onCreate(savedInstanceState);<br /> setContentView(R.layout.mygridview_mainactivity);<br /> init();<br /> }</p> <p> private int pageColCount = 4;//每页列数<br /> private int itemTotal = 0;<br /> String chengyuStr[] = null;<br /> private void init(){<br /> typeFace = Typeface.createFromFile("/system/fonts/hifont_kai.ttf"); </p> <p> mygridview_GridV = (GridView)findViewById(R.id.mygridview_GridV);</p> <p> chengyuStr = getResources().getStringArray(R.array.chengyu);<br /> itemTotal = chengyuStr.length;<br /> Log.i(TAG, "itemTotal="+itemTotal);</p> <p> mygridview_GridV.setNumColumns(pageColCount);<br /> mygridview_GridV.setAdapter(new MyAdapter(this));<br /> mygridview_GridV.setHorizontalSpacing(10);</p> <p> setListener();<br /> }</p> <p> private int preSelId = -1;//记录每次选择项id，方便突出显示被选择项<br /> private View preSelView = null;//记录每次选择项，方便突出显示被选择项<br /> private long lastClickTime = 0;//记录上次点击时间，避免快速多次点击<br /> private void setListener(){<br /> mygridview_GridV.setOnItemClickListener(new OnItemClickListener() {<br /> @Override<br /> public void onItemClick(AdapterView<?> arg0, View arg1,<br /> int position, long arg3) {</p> <p> long currentTime = System.currentTimeMillis();<br /> if(currentTime - lastClickTime < 500)<br /> return;<br /> lastClickTime = currentTime;</p> <p> if(position < itemTotal && preSelId != position){<br /> TextView contentTv = (TextView)arg1;<br /> contentTv.setBackgroundColor(Color.RED);<br /> contentTv.setTextColor(Color.WHITE);<br /> Log.i(TAG, "preselid="+preSelId+", position="+position+", child="+arg0.getChildCount());</p> <p> if(preSelView != null){<br /> TextView preSelContentTv = (TextView)preSelView;<br /> preSelContentTv.setBackgroundColor(Color.WHITE);<br /> preSelContentTv.setTextColor(Color.BLACK);<br /> }<br /> preSelId = position;<br /> preSelView = arg1;<br /> }<br /> }<br /> });<br /> }</p> <p> private class MyAdapter extends BaseAdapter{<br /> private Context mContext; </p> <p> public MyAdapter(Context context) {<br /> this.mContext=context;<br /> } </p> <p> @Override<br /> public int getCount() {<br /> // Log.i(TAG, "getCount ="+itemTotal);<br /> return itemTotal;<br /> } </p> <p> @Override<br /> public Object getItem(int position) {<br /> return null;<br /> } </p> <p> @Override<br /> public long getItemId(int position) {<br /> // TODO Auto-generated method stub<br /> return 0;<br /> } </p> <p> private final static int SEL_FONTSIZE = 30;//字体大小<br /> @Override<br /> public View getView(int position, View convertView, ViewGroup parent) {<br /> // Log.i(TAG, "getView position="+position);<br /> TextView contentTv;<br /> if(convertView==null){<br /> contentTv=new TextView(mContext);<br /> }else{<br /> contentTv = (TextView) convertView;<br /> }</p> <p> contentTv.setLayoutParams(new GridView.LayoutParams(GridView.LayoutParams.WRAP_CONTENT,<br /> GridView.LayoutParams.WRAP_CONTENT));<br /> contentTv.setTextSize(SEL_FONTSIZE);<br /> contentTv.setGravity(Gravity.CENTER);<br /> contentTv.setTypeface(typeFace);<br /> if(preSelId == position){<br /> contentTv.setBackgroundColor(Color.RED);<br /> contentTv.setTextColor(Color.WHITE);<br /> }else{<br /> contentTv.setBackgroundColor(Color.WHITE);<br /> contentTv.setTextColor(Color.BLACK);<br /> }<br /> String text = chengyuStr[position];<br /> if(text != null)<br /> contentTv.setText(text);<br /> return contentTv; </p> <p> }<br /> }<br /> }<br /> mygridview_mainactivity.xml<br /> <?xml version="1.0" encoding="utf-8"?><br /> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"><gridview android:id="@+id/mygridview_GridV" android:layout_width="900dip" android:layout_height="450dip" android:layout_margintop="10dip" android:layout_centerinparent="true" android:horizontalspacing="10dip" android:verticalspacing="10dip"></gridview></relativelayout>chengyu.xml<?xml version="1.0" encoding="utf-8"?><br /> <resources><br /> <string-array name="chengyu"><br /> <item>雕龙画凤</item><br /> <item>放龙入海</item><br /> <item>凤表龙姿</item><br /> <item>虎斗龙争</item><br /> <item>活龙活现</item><br /> <item>踞虎盘龙</item><br /> <item>亢龙有悔</item><br /> <item>跨凤乘龙</item><br /> <item>老迈龙钟</item><br /> <item>龙韬豹略</item><br /> <item>龙腾虎跃</item><br /> <item>龙头蛇尾</item><br /> <item>龙行虎步</item><br /> <item>马龙车水</item><br /> <item>马如游龙</item><br /> <item>盘龙卧虎</item><br /> <item>白龙鱼服</item><br /> <item>暴腮龙门</item><br /> <item>笔走龙蛇</item><br /> <item>藏龙卧虎</item><br /> <item>车水马龙</item><br /> <item>成龙配套</item><br /> <item>乘龙佳婿</item><br /> <item>乘龙快婿</item><br /> <item>打凤捞龙</item><br /> <item>得婿如龙</item><br /> <item>二龙戏珠</item><br /> <item>伏虎降龙</item><br /> <item>伏龙凤雏</item><br /> <item>龟龙片甲</item><br /> <item>龟龙鳞凤</item><br /> </string-array><br /> </resources><br />