Question

我正在从这个site做ListView示例。以下是我的代码，

public class MainActivity extends Activity 
{
    private ListView listView;

    String[] values = new String[] { "A","B","C","D","E","F","G","H","I","J" };

    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = (ListView) findViewById(R.id.listData);
    }

    @Override
    protected void onResume()
    {
        super.onResume();
        final ArrayList<String> list = new ArrayList<String>();

        for ( int i = 0 ; i < values.length ; i++ )
        {
            list.add(values[i]);
        }


        final MyAdapter adapter = new MyAdapter ( this, android.R.layout.simple_list_item_1, list );

        listView.setAdapter(adapter);

        listView.setOnItemClickListener( new AdapterView.OnItemClickListener() 
        {
            @Override
            public void onItemClick ( AdapterView<?> parent, final View view, int position, long id )
            {
                final String item = ( String ) parent.getItemAtPosition(position);
                view.animate().setDuration(2000).alpha(0)
                .withEndAction( new Runnable()
                {
                    @Override
                    public void run()
                    {
                        list.remove(item);
                        adapter.notifyDataSetChanged();
                        view.setAlpha(1);
                    }
                });
            }
        });
    }

    private class MyAdapter extends ArrayAdapter<String>
    {
        HashMap<String,Integer> hashMap = new HashMap<String,Integer>();

        public MyAdapter( Context context, int id, List<String> list )
        {
            super ( context, id, list );

            for ( int i = 0 ; i < list.size() ; i++ )
            {
                hashMap.put( list.get(i), i );
            }
        }

        @Override
        public long getItemId( int position )
        {
            String item = getItem(position);
            return Long.valueOf(hashMap.get(item));
        }

        @Override
        public boolean hasStableIds()
        {
            return true;
        }
    }
}

但是，当我运行此代码并单击列表视图时，它会出错。以下是我的logcat。

11-29 16:24:49.249: E/AndroidRuntime(21837): FATAL EXCEPTION: main
11-29 16:24:49.249: E/AndroidRuntime(21837): java.lang.NoSuchMethodError: android.view.ViewPropertyAnimator.withEndAction
11-29 16:24:49.249: E/AndroidRuntime(21837):    at com.example.listviewexample.MainActivity$1.onItemClick(MainActivity.java:52)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.widget.AdapterView.performItemClick(AdapterView.java:292)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.widget.AbsListView.performItemClick(AbsListView.java:1394)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.widget.AbsListView$PerformClick.run(AbsListView.java:3024)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.widget.AbsListView$1.run(AbsListView.java:3830)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.os.Handler.handleCallback(Handler.java:605)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.os.Handler.dispatchMessage(Handler.java:92)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.os.Looper.loop(Looper.java:137)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at android.app.ActivityThread.main(ActivityThread.java:4517)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at java.lang.reflect.Method.invokeNative(Native Method)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at java.lang.reflect.Method.invoke(Method.java:511)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
11-29 16:24:49.249: E/AndroidRuntime(21837):    at dalvik.system.NativeStart.main(Native Method)

如何解决此错误？

Answer 1

public ViewPropertyAnimator withEndAction (Runnable runnable)

此方法仅适用于API 16 ，因此，如果您的设备具有API＆lt; 16，不幸的是，它不会起作用。请看Android docs。

您需要确保只有API＆gt;才能执行此方法 16 ：

if (Build.VERSION.SDK_INT > Build.VERSION_CODES.JELLY_BEAN) { // use method } else { // you can't use that method }

使用ListView时NoSuchMethodError

1 个答案: