5. android 列表视图

目录结构

第一步

value/strings.xml

<?xml version="1.0" encoding="utf-8"?> <resources> <string name="hello">你选择了</string> <string name="app_name">高级控件</string> <string name="andy">Andy Rubin /nAndroid的创造者</string> <string name="bill">Bill Joy /nJava的创造者</string> <string name="edgar">Edgar F. Codd /n关系数据库之父</string> <string name="torvalds">Linus Torvalds /nLinux之父</string> <string name="turing">Turing Alan /nIT的祖师爷</string> <string name="ys">你选择了</string> </resources>

第二步

value/colors.xml

<?xml version="1.0" encoding="utf-8"?> <resources> <color name="red">#fd8d8d</color> <color name="green">#9cfda3</color> <color name="blue">#8d9dfd</color> <color name="white">#FFFFFF</color> <color name="black">#000000</color> <color name="gray">#050505</color> </resources>

第三步

layout/list_view_layout.xml

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/textview" android:layout_width="fill_parent" android:layout_height="wrap_content" android:textSize="24dip" android:textColor="@color/white" android:text="@string/hello" /> <ListView android:id="@+id/listview" android:layout_width="fill_parent" android:layout_height="wrap_content"/> </LinearLayout>

第四步

ListViewActivity.java

package com.taofu5; import android.app.Activity; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.View.OnClickListener; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.Gallery; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import android.widget.AdapterView.OnItemClickListener; import android.widget.AdapterView.OnItemSelectedListener; public class ListViewActivity extends Activity { int[] msgIds = {R.string.andy,R.string.bill, R.string.edgar, R.string.torvalds,R.string.turing}; int[] imgIds = {R.drawable.andy, R.drawable.bill, R.drawable.edgar, R.drawable.torvalds, R.drawable.turing}; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.list_view_layout); ListView listView = (ListView) this.findViewById(R.id.listview); BaseAdapter adapter = new BaseAdapter() { @Override public int getCount() { return imgIds.length; } @Override public Object getItem(int arg0) { return null; } @Override public long getItemId(int arg0) { return 0; } @Override public View getView(int num, View view, ViewGroup group) { LinearLayout ll = new LinearLayout(ListViewActivity.this); ll.setOrientation(LinearLayout.HORIZONTAL); ll.setPadding(5, 5, 5, 5); ImageView imageView = new ImageView(ListViewActivity.this); imageView.setImageDrawable(getResources().getDrawable(imgIds[num])); imageView.setScaleType(ImageView.ScaleType.FIT_XY); imageView.setLayoutParams(new Gallery.LayoutParams(100, 98)); ll.addView(imageView); TextView textView = new TextView(ListViewActivity.this); textView.setText(getResources().getText(msgIds[num])); textView.setTextSize(24); textView.setTextColor( ListViewActivity.this.getResources().getColor(R.color.blue)); textView.setPadding(5, 5, 5, 5); textView.setGravity(Gravity.LEFT); ll.addView(textView); return ll; } }; listView.setAdapter(adapter); listView.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> adapter, View view, int num, long lnum) { TextView textView = (TextView) findViewById(R.id.textview); LinearLayout layout = (LinearLayout) view; TextView subTextView = (TextView)layout.getChildAt(1); StringBuilder strBuilder = new StringBuilder(); strBuilder.append(getResources().getText(R.string.ys)); strBuilder.append(":" + subTextView.getText()); String stemp = strBuilder.toString(); textView.setText(stemp.split("//n")[0]); } @Override public void onNothingSelected(AdapterView<?> arg0) { } }); listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapter, View view, int num, long lnum) { TextView textView = (TextView) findViewById(R.id.textview); LinearLayout layout = (LinearLayout) view; TextView subTextView = (TextView)layout.getChildAt(1); StringBuilder strBuilder = new StringBuilder(); strBuilder.append(getResources().getText(R.string.ys)); strBuilder.append(":" + subTextView.getText()); String stemp = strBuilder.toString(); textView.setText(stemp.split("//n")[0]); } }); } }

第五步：

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.taofu5" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".ListViewActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="7" /> </manifest>

效果截图如下

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