我想發送字符串到我的列表視圖。可悲的是,數據沒有被髮送過來並且沒有顯示任何錯誤。主要活動有列表視圖,用戶點擊一個按鈕(將它們帶到第二個活動),他們可以在其中輸入產品名稱,並自動將它們帶回主要活動。字符串數據沒有被髮送到主要的活動
這確實有用,但我必須弄清楚一些事情。我錯過了什麼嗎?
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) {
}
}
);
}
}
次活動
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();
}
}
,你打電話addNames? –