android listview无法正常工作

Question

我是Android开发的新手，我刚刚了解了列表视图和数组适配器等。我在android studio中有一个项目，有多个活动，在一个我有一个数组适配器和列表视图，但每次我运行应用程序并切换到其中包含列表视图的活动，应用程序不响应并关闭。我检查了代码，它与我见过的几个教程中的代码相同。我认为这与我的多项活动有关，有人可以帮助我吗？

public class StoreActivity extends ActionBarActivity {

String[] storeList = {"Ship 1", "Ship 2", "Ship 3"};


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

    ListView store;
    store = (ListView) findViewById(R.id.list);

    ArrayAdapter<String> adapter = new ArrayAdapter(this, R.layout.row_layout, storeList);
    store.setAdapter(adapter);
}

Answer 1

如果你没有使用ArrayAdapter，这是初始化它的正确方法：

  ArrayAdapter<String> adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, storeList);

例如：

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

    ListView store;
    store = (ListView) findViewById(R.id.list);

    //ArrayAdapter<String> adapter = new ArrayAdapter(this, R.layout.row_layout, storeList);
     ArrayAdapter<String> adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, storeList);
    store.setAdapter(adapter);
}

但是想要在自定义行布局（row_layout.xml）中加载数据，添加textView的id（我认为这就是你需要的）：

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

    ListView store;
    store = (ListView) findViewById(R.id.list);

    //ArrayAdapter<String> adapter = new ArrayAdapter(this, R.layout.row_layout, storeList);
     ArrayAdapter<String> adapter = new ArrayAdapter(this, android.R.layout.row_layout,  R.id.myTextView, storeList);
    store.setAdapter(adapter);
}

Answer 2

更改此行

    ArrayAdapter<String> adapter = new ArrayAdapter(this, R.layout.row_layout, storeList);

到此：

ArrayAdapter<String> adapter = new ArrayAdapter(this, R.layout.row_layout, R.id.TextViewofRow_layoutstoreList, storeList);

你需要说明你将把数据放在哪个textview中。