问题描述

自定义listview后程序直接停止运行logcat里一点错误提示都没有是什么原因

//MainActivity.java
package com.example.jkd.listview;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListView;
import android.widget.SimpleAdapter;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class MainActivity extends ActionBarActivity {

private ListView listView = null;
private List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
private SimpleAdapter simpleAdapter = null;

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

private void initView() {
    listView = (ListView) super.findViewById(R.id.listView);
    settingAdapter();
    listView.setAdapter(simpleAdapter);
}

private void settingAdapter() {
    initList();
    // map中的key
    String from[] = new String[] { "people", "name", "introduce" };
    // 模板中的组件id
    int to[] = new int[] { R.id.people, R.id.name, R.id.introduce };
    simpleAdapter = new SimpleAdapter(this, list, R.layout.listview_item,
            from, to);
}

private void initList() {
    // 显示的图片资源
    int[] res = new int[] { R.drawable.maaa, R.drawable.mao,
            R.drawable.maoa, R.drawable.maoaa, R.drawable.maoaaa,

};
// 定义一个二维数组来显示姓名和简介
String string[][] = new String[][] { { "猫1", "猫1简介" },
{ "猫2", "猫2简介" }, { "猫3", "猫3简介" }, { "猫4", "猫4简介" },
{ "猫5", "猫5简介" }, };
//初始化list数据
for (int i = 0; i < 9; i++) {
HashMap map = new HashMap();
map.put("people", res[i]);
map.put("name", string[i][0]);
map.put("introduce", string[i][1]);
list.add(map);
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

//avtivity_main.xml
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="wrap_content" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/listView"
    android:layout_marginTop="17dp"
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />

//listview_item.xml
<?xml version="1.0" encoding="utf-8"?>
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >

<ImageView
    android:id="@+id/people"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:layout_margin="10dp" />

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="10dp"
        android:text="TextView" />

    <TextView
        android:id="@+id/introduce"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="10dp"
        android:text="TextView" />

</LinearLayout>

<LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:orientation="vertical" >
</LinearLayout>

解决方案

数组越界吧，你明明5个，循环写的9个

解决方案二：

把初始化，getview等敏感的地方打上断点，耐心调试