【安卓】关于双listview二级联动的问题。

Z时代
2024-01-10
分类：技术分享

想做一个带双listview的二级联动的界面，现在就先写一个简单的demo来验证一下我想法的可行性，那么问题来了

    @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.two_list_view);
listView1 = (ListView) findViewById(R.id.list_view1);
listView2 = (ListView) findViewById(R.id.list_view2);
final List<String> data = new ArrayList<>();
for (int i = 0; i < 10; i++) {
data.add("第" + i + "个");
}
final List<List<String>> twoData = new ArrayList<>();
List<String> tempData;
for (int i = 0; i < 10; i++) {
tempData = new ArrayList<>();
for (int j = 0; j < 10; j++) {
tempData.add(data.get(i) + " :" + j);
}
twoData.add(i,tempData);
}
final List<String> data2 = twoData.get(0);
System.out.println("test" + twoData.get(0).get(1));
final ListView1Adapter listView1Adapter = new ListView1Adapter(data, this);
final ListView1Adapter listView1Adapter1 = new ListView1Adapter(data2, this);
listView1.setAdapter(listView1Adapter);
listView2.setAdapter(listView1Adapter1);
System.out.println("test" + twoData.get(0).get(1));
listView1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
data2.clear();
System.out.println(twoData.get(position).size());
for (int i = 0; i < twoData.get(position).size(); i++) {
data2.add(i,twoData.get(position).get(i));
}
listView1Adapter1.notifyDataSetChanged();
}
});}