安卓天天练练（十）ListView

ListView不能和ScrollView同时使用，因为它已经包含了滚动支持。

还有个Gallery

http://blog.csdn.net/dazlly/article/details/7863923

居然过期了。。。用HorizontalScrollView代替

package com.narumi.android_12_1;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {
    //所有图片
    int [] drawableIds = {
            R.drawable.andy,R.drawable.bill,R.drawable.edgar,R.drawable.linus,R.drawable.turing
    };

    int [] msgIds= {
            R.string.andy,R.string.bill,R.string.edgar,R.string.linus,R.string.turing
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        ListView lv = (ListView)findViewById(R.id.ListView01);

        BaseAdapter ba = new BaseAdapter() {

            @Override
            public View getView(int arg0, View arg1, ViewGroup arg2) {
                // TODO Auto-generated method stub
                LinearLayout ll=new LinearLayout(MainActivity.this);
                ll.setOrientation(LinearLayout.HORIZONTAL);
                ll.setPadding(5, 5, 5, 5);
                ImageView ii = new ImageView(MainActivity.this);
                ii.setImageDrawable(getResources().getDrawable(drawableIds[arg0], getTheme()));
                ii.setScaleType(ImageView.ScaleType.FIT_XY);
                ii.setLayoutParams(new HorizontalScrollView.LayoutParams(100,98));
                ll.addView(ii);
                TextView tv=new TextView(MainActivity.this);
                tv.setText(getResources().getText(msgIds[arg0]));
                tv.setTextSize(24);
                tv.setTextColor(MainActivity.this.getResources().getColor(R.color.white));
                tv.setPadding(5, 5, 5, 5);
                tv.setGravity(HorizontalScrollView.FOCUS_LEFT);
                ll.addView(tv);
                return ll;
            }

            @Override
            public long getItemId(int arg0) {
                // TODO Auto-generated method stub
                return 0;
            }

            @Override
            public Object getItem(int arg0) {
                // TODO Auto-generated method stub
                return null;
            }

            @Override
            public int getCount() {
                // TODO Auto-generated method stub
                return 5;
            }
        };

        lv.setAdapter(ba);

        lv.setOnItemSelectedListener(
                new OnItemSelectedListener(){

                    @Override
                    public void onItemSelected(AdapterView<?> arg0, View arg1,
                            int arg2, long arg3) {
                        // TODO Auto-generated method stub
                        TextView tView=(TextView)findViewById(R.id.TextView01);
                        LinearLayout llLayout=(LinearLayout)arg1;
                        TextView tvn=(TextView)llLayout.getChildAt(1);
                        StringBuilder sb=new StringBuilder();
                        sb.append(getResources().getText(R.string.ys));
                        sb.append(".");
                        sb.append(tvn.getText());
                        String stemp=sb.toString();
                        tView.setText(stemp.split("\\n")[0]);
                    }

                    @Override
                    public void onNothingSelected(AdapterView<?> parent) {
                        // TODO Auto-generated method stub

                    }
                }
                );
        lv.setOnItemClickListener(
                new OnItemClickListener(){

                    @Override
                    public void onItemClick(AdapterView<?> arg0, View arg1,
                            int arg2, long arg3) {
                        // TODO Auto-generated method stub
                        TextView tView=(TextView)findViewById(R.id.TextView01);
                        LinearLayout llLayout=(LinearLayout)arg1;
                        TextView tvn=(TextView)llLayout.getChildAt(1);
                        StringBuilder sb=new StringBuilder();
                        sb.append(getResources().getText(R.string.ys));
                        sb.append(".");
                        sb.append(tvn.getText());
                        String stemp=sb.toString();
                        tView.setText(stemp.split("\\n")[0]);
                    }
                }
                );
    }

}

自己P了五张图

  

　　   　　   图灵小朋友真萌 O(∩_∩)O

由于使用了安卓自带控件，布局文件很简单

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/black"
    android:orientation="vertical"
    tools:context="com.narumi.android_12_1.MainActivity" >

    <TextView
        android:id="@+id/TextView01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="24sp"
        android:textColor="@color/white"
        android:text="@string/hello"
         />

    <ListView
        android:id="@+id/ListView01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@color/black"
        android:choiceMode="singleChoice" />

</LinearLayout>

建立color.xml的时候要注意类型是Color List，下一步的时候可以填生成路径，直接把\color改成 \values

　　 <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>

strings一般原来就有

    <string name="hello">您选择了</string>
    <string name="app_name">ListViewExample</string>
    <string name="andy">Andy Rubin \nAndroid的创造者</string>
    <string name="bill">Bill Joy \nJava创造者之一</string>
    <string name="edgar">Edgr F. Codd \n关系数据库之父</string>
    <string name="linus">Linus Torvalds \nLinux之父</string>
    <string name="turing">Turing Alan \nIT的祖师爷</string>
    <string name="ys">您选择了</string>

此例的效果也就是点一行会再顶部显示与这行同样的信息，java代码有点多有点乱，貌似已经使得HorizontalScrollView与ListView冲突了，待修改（Gallery有毛线用啊）。