SeekBar的报错解决方法

学习SeekBar时报以下错误
：

Multiple markers at this line

    - OnSeekBarChangeListener cannot be resolved to a type
    - The method setOnSeekBarChangeListener(SeekBar.OnSeekBarChangeListener) in the type SeekBar is not applicable for the

     arguments (new OnSeekBarChangeListener(){})

The method onStopTrackingTouch(SeekBar) of type new OnSeekBarChangeListener(){} must override or implement a supertype method

The method onProgressChanged(SeekBar, int, boolean) of type new OnSeekBarChangeListener(){} must override or implement a supertype method

package com.example.seekbartext;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.SeekBar;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {TextView tv;SeekBar sb;int status;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tv = (TextView) findViewById(R.id.textView1);sb = (SeekBar) findViewById(R.id.seekBar1);sb.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {Toast.makeText(MainActivity.this, "滑动结束", 0).show();}@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {Toast.makeText(MainActivity.this, "滑动开始", 0).show();}@Overridepublic void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {tv.setText("当前值为："+progress);}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}}

主要解决方法是发现   

sb.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

new的监听器通过提示Alt+/自动输入，但并没有自动导包

导入包就能解决

import android.widget.SeekBar.OnSeekBarChangeListener;