关于使用内部类作为监听器出现的问题The type MainActivity.ButtonListener must implement the inherited abstract method D

这是源代码：

package com.example.test44;
 
import android.app.Activity;
 
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.content.DialogInterface.OnClickListener;             //关注这里，包导错了
import android.widget.Button;
import android.widget.ProgressBar;

public class MainActivity extends Activity {
	private ProgressBar firstBar =null;
	private ProgressBar secondBar = null;
	private Button myButton = null;
	private int i = 0 ;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		firstBar = (ProgressBar)findViewById(R.id.firstBar);
    	secondBar = (ProgressBar)findViewById(R.id.secondBar);
    	myButton = (Button)findViewById(R.id.myButton);
    	myButton.setOnClickListener(new ButtonListener());

	}
	
	class ButtonListener implements  OnClickListener{
		
		public void onClick(View v) {
			if(i == 0)
			{
				//设置进度条处于可见的状态
				firstBar.setVisibility(View.VISIBLE);
				firstBar.setMax(150);
				secondBar.setVisibility(View.VISIBLE);
			}
			else if ( i < firstBar.getMax()){
				//设置主进度条的当前值
				firstBar.setProgress(i);
				//设置第二进度条的当前值
				firstBar.setSecondaryProgress(i + 10);
				//因为默认的进度条无法显示进行的状态
				//secondBar.setProgress(i);
				
			}
			else{
				//设置进度条处于不可见状态
				firstBar.setVisibility(View.GONE);
				secondBar.setVisibility(View.GONE);
			}
			i = i + 10 ;
		}
	}

	@Override
	public 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;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}

这时会有错，显示：The type MainActivity.ButtonListener must implement the inherited abstract method DialogInterface.OnClickListener.onClick(DialogInterface, int)

解决办法是：方法一.将class ButtonListener implements  OnClickListener{}改为android.view.View.OnClickListener

方法二.将导入的包import android.content.DialogInterface.OnClickListener;给删了，导入import android.view.View.OnClickListener;包

而导致这个问题的原因则是：我们最开始给写的OnClickListener导入包时导错了，应该导入的包是import android.view.View.OnClickListener;结果却导成了import android.content.DialogInterface.OnClickListener;这两个方法是不同的：一个是对话框对应按钮的点击监听器，另外一个是普通View的点击监听器。

参考链接：优快云论坛：继承OnClickListener 为什么会出错 改为android.view.View.OnClickListener就没问题了

百度知道：The type new View.OnClickListener(){} must implement the inherited abstract method View.Onclicklis