我想发送字符串到我的列表视图。可悲的是,数据没有被发送过来并且没有显示任何错误。主要活动有列表视图,用户点击一个按钮(将它们带到第二个活动),他们可以在其中输入产品名称,并自动将它们带回主要活动。字符串数据没有被发送到主要的活动
这确实有用,但我必须弄清楚一些事情。我错过了什么吗?
MainActivity.java
public class MainActivity extends Activity {
private ListView listView;
private String[] details;
public static ArrayList<String> names = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView);
// replace \ with left angle bracket in the line below
ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, names);
listView.setAdapter(arrayAdapter);
listView.setOnItemClickListener(
new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
}
}
);
}
}
次活动
public class Main2Activity extends Activity {
private EditText textName;
private EditText textModel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
textName=(EditText)findViewById(R.id.inputName);
textModel=(EditText)findViewById(R.id.inpuModelNumber);
}
public void addNames(View v){
MainActivity.names.add(textName.getText().toString());
finish();
}
}
,你打电话addNames? –