Question

新人eclipse点击按钮触发事件

Answer 1

现在是每次点击加1，我想每次加5上限是30，并打印出一句话。
（如果可以的话最好能再加上一个按钮可以每次减5，减到count = 3;为止。）

package com.txst.cs01;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

private TextView textview;
private Button button;
int count = 3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

textview = (TextView)findViewById(R.id.textview);
//textview.setText("北京你好");
button = (Button)findViewById(R.id.button1);

ButtonListener buttonlistener = new ButtonListener();
button.setOnClickListener(buttonlistener);
}

@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;
}
class ButtonListener implements OnClickListener{
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
count++;
textview.setText(count + "");
}

}
}