折叠list ExpandableList+ BaseExpandableListAdapter 自定义 折叠列表

先看下效果图：

第一个是展开的效果，剩下两个是关闭的效果。

包含三个文件，一个 java，另一个重写的BaseExpandableListAdapter,还有一个布局文件

java代码：

public class MainActivity extends Activity {

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

        ExpandableListView s = ((ExpandableListView) findViewById(R.id.expandableListView1));
        eda adapter = new eda(this);
        s.setAdapter(adapter);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

 

adaptert代码：

public class eda extends BaseExpandableListAdapter {
    private Context cxt;
    int[] logos = new int[] { R.drawable.z1, R.drawable.z2, R.drawable.z4 };
    String[] gt = new String[] { "组1", "组2", "组3" };
    String[][] arms = new String[][] { { "狂战士", "雨雪卖身", "asdas" },
            { "高于掐", "神奇的猴子", "不神奇啊" }, { "天才的啥", "士大夫", "q32" } };

    public eda(Context ctx) {
        // TODO Auto-generated constructor stub
        this.cxt = ctx;
    }

    public Object getChild(int groupPosition, int childPosition) {
        // TODO Auto-generated method stub
        return arms[groupPosition][childPosition];
    }

    public long getChildId(int arg0, int childPosition) {
        // TODO Auto-generated method stub
        return childPosition;
    }

    public View getChildView(int groupPosition, int childPosition,
            boolean isExpanded, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        TextView t = new TextView(cxt);
        t.setPadding(50, 0, 0, 0);
        t.setText(getChild(groupPosition, childPosition).toString());
        return t;

    }

    public int getChildrenCount(int groupPosition) {
        // TODO Auto-generated method stub
        return arms[groupPosition].length;
    }

    public Object getGroup(int groupPosition) {
        // TODO Auto-generated method stub
        return gt[groupPosition];
    }

    public int getGroupCount() {
        // TODO Auto-generated method stub
        return gt.length;
    }

    public long getGroupId(int groupPosition) {
        // TODO Auto-generated method stub
        return groupPosition;
    }

    public View getGroupView(int groupPosition, boolean isExpanded,
            View converView, ViewGroup parent) {
        // TODO Auto-generated method stub

        LinearLayout ll = new LinearLayout(cxt);
        ll.setOrientation(0);
        ImageView logo = new ImageView(cxt);
        logo.setImageResource(logos[groupPosition]);
        ll.addView(logo);
        TextView tt = new TextView(cxt);
        tt.setText(getGroup(groupPosition).toString());
        ll.addView(tt);
        return ll;
    }

    public boolean hasStableIds() {
        // TODO Auto-generated method stub
        return true;
    }

    public boolean isChildSelectable(int arg0, int arg1) {
        // TODO Auto-generated method stub
        return false;
    }

}

布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >



    <ExpandableListView
        android:id="@+id/expandableListView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:childIndicator="@drawable/z3" >

    </ExpandableListView>

</LinearLayout>