Android菜鸟一枚,给button设置一个监听器,每次点击,textview中内容加1,为什么运行中程序直接退出?
RATNG 2016-08-07 10:51:47 package com.example.activitytest;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class FirstActivity extends Activity {
Button button;
TextView textview;
int count=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.first_layout);
button=(Button)findViewById(R.layout.first_layout);
textview=(TextView) findViewById(R.layout.first_layout);
button.setOnClickListener(new clickListener());
}
public class clickListener implements OnClickListener{
public void onClick(View v) {
count++;
textview.setText(count+" ");
}
}
}