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我有 ListView。我也有按钮。它们位于RelativeLayout 内部。我希望能够通过按钮 onClick(View v) 更改所选 ListView 项目的 TexView 文本。列表视图布局：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >

    <ImageView
        android:id="@+id/icon"
        android:layout_width="22px"
        android:layout_height="22px"
        android:layout_marginLeft="4px"
        android:layout_marginRight="10px"
        android:layout_marginTop="4px"
        android:src="@drawable/ic_launcher" >
    </ImageView>

    <TextView
        android:id="@+id/label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@+id/label"
        android:textSize="20px" >
    </TextView>

</LinearLayout>

主要活动：

public class MainActivity extends Activity {
    private TextView mTextView;
    private ListView my_list;
    private MyArrayAdapter adapt;
    Button mybutton;

    public void onCreate(Bundle icicle) {
        super.onCreate(icicle); 

        String[] mContacts = {
                "Jacob Anderson dsfd sdfdf sdfsd sdfds", "Emily Duncan", "Michael Fuller", 
                "Emma Greenman", "Joshua Harrison", "Madison Johnson",
                "Matthew Cotman", "Olivia Lawson", "Andrew Chapman", 
                "Daniel Honeyman", "Isabella Jackson", "William Patterson", 
                "Joseph Godwin", "Samantha Bush", "Christopher Gatema55"};

        setContentView(R.layout.activity_main);
        my_list=(ListView)findViewById(R.id.listView1);
        adapt=new MyArrayAdapter(this, mContacts, 0);
        my_list.setAdapter(adapt);

        mybutton = (Button)findViewById(R.id.button1);
        mybutton.setOnClickListener(new OnClickListener() {     
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}

如果我想像这样编辑 TextView 应该怎么做：

        SpannableString text = new SpannableString("Lorem ipsum dolor sit amet");
    text.setSpan(new ForegroundColorSpan(Color.RED), 0, 5, 0);
    TextViewOfSelectedItem.setText(text, BufferType.SPANNABLE);

如何通过项目位置获取 ListView 项目的 TextViewOfSelectedItem 或 TextView？

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1 回答 1

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您可以使用 获取所选项目的文本setOnItemClickListener()。你可以使用这种方式。

    my_list.setOnItemClickListener(new OnItemClickListener() {

  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
 long arg3) {
         // TODO Auto-generated method stub
    String  getSelectedTextOfList = yourList.get(pos); // here you can get selected item.
 }
});
于 2012-08-13T23:24:16.443 回答