利用点击事件进行界面跳转时出现问题
package com.chapter3;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
private Button changeBGCb;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//更改窗口背景颜色按钮
changeBGCb = (Button) findViewById(R.id.ChangeBGCButton);
changeBGCb.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this,ChangeBGC_Activity.class);
startActivity(intent);
};
}
);
}
}
当按下按钮时间就出错了,问什么??