Android备忘录代码
时间: 2023-11-03 09:28:34 浏览: 44
抱歉,我作为一个语言模型并不能直接提供代码。不过,以下是一个简单的Android备忘录应用的代码框架,你可以参考一下:
1. activity_main.xml:
```xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Enter your memo here" />
<Button
android:id="@+id/addButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add memo" />
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
```
2. Memo.java:
```java
public class Memo {
private String text;
private Date date;
public Memo(String text) {
this.text = text;
this.date = new Date();
}
public String getText() {
return text;
}
public Date getDate() {
return date;
}
}
```
3. MemoAdapter.java:
```java
public class MemoAdapter extends ArrayAdapter<Memo> {
private Context context;
private int resource;
public MemoAdapter(Context context, int resource, List<Memo> memos) {
super(context, resource, memos);
this.context = context;
this.resource = resource;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
Memo memo = getItem(position);
if (convertView == null) {
convertView = LayoutInflater.from(context).inflate(resource, parent, false);
}
TextView textView = convertView.findViewById(android.R.id.text1);
textView.setText(memo.getText());
TextView textView2 = convertView.findViewById(android.R.id.text2);
textView2.setText(memo.getDate().toString());
return convertView;
}
}
```
4. MainActivity.java:
```java
public class MainActivity extends AppCompatActivity {
private List<Memo> memos;
private MemoAdapter memoAdapter;
private EditText editText;
private Button addButton;
private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = findViewById(R.id.editText);
addButton = findViewById(R.id.addButton);
listView = findViewById(R.id.listView);
memos = new ArrayList<>();
memoAdapter = new MemoAdapter(this, android.R.layout.simple_list_item_2, memos);
listView.setAdapter(memoAdapter);
addButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String text = editText.getText().toString().trim();
if (text.isEmpty()) {
Toast.makeText(MainActivity.this, "Please enter a memo", Toast.LENGTH_SHORT).show();
return;
}
Memo memo = new Memo(text);
memos.add(memo);
memoAdapter.notifyDataSetChanged();
editText.setText("");
}
});
}
}
```
这只是一个简单的备忘录应用程序的代码框架,您可以根据您的需要对其进行修改和扩展。