这段代码button1.setOnClickListener(new OnClickListener() {这行为什么会报错?,setonclicklistener
package com.example.activitytest;
import android.app.*;
import android.content.*;
import android.view.*;
import android.widget.Toast;
import android.os.Bundle;
import android.app.*;
import android.os.*;
import android.support.*;
import android.widget.*;
public class FirstActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.first_layout);
Button button1 = (Button)findViewById(R.id.button_1);
button1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Toast.makeText(FirstActivity.this, "You clicked Button 1",
Toast.LENGTH_SHORT).show();
}
});
}
}
import android.app.*;
import android.content.*;
import android.view.*;
import android.widget.Toast;
import android.os.Bundle;
import android.app.*;
import android.os.*;
import android.support.*;
import android.widget.*;
public class FirstActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.first_layout);
Button button1 = (Button)findViewById(R.id.button_1);
button1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Toast.makeText(FirstActivity.this, "You clicked Button 1",
Toast.LENGTH_SHORT).show();
}
});
}
}
解决方案
你鼠标悬浮到上面不就可以看到提示让你倒入包了吗 View.OnClickListener Ctrl+Shift+O导包,记住是导View.OnClickListener 兄弟 你把鼠标悬停在报错的波浪线那(要不要左键还是右键点一下我忘了)会出现一堆提示,你点第一个就行了啊 import android.view.View.OnClickListener; 直接ctrl+shift+o
这个都可以的 用耳去听,用心去想!
用户评论