Suddently," R.java"从我英寸时删除;复选框"程序? [英] Suddently, "R.java" was deleted from my "CheckBox" program?
本文介绍了Suddently," R.java"从我英寸时删除;复选框"程序?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我学习的Android(我是初学者),使一个程序复选框
。结果
一切似乎都很好,但是当我清理我的项目突然,R.java被删除,它给了一个错误。结果
我检查三次,但没有得到它回来了。
I'm learning Android (I'm a beginner) and making a program for CheckBox
.
Everything seems fine, but when I cleaned my project suddenly, R.java was deleted and it's giving an error.
I checked three times, but not getting it back.
下面是我的源$ C $ C:
Here is my source code:
activity_main.xml中
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="IPhone" />
<CheckBox
android:id="@+id/checkBox2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Android"
android:checked="true"/>
<CheckBox
android:id="@+id/checkBox3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Windows Mobile"
android:checked="false"/>
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Display" />
</LinearLayout>
MainActivity.java
package com.example.lesson06;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
addListenerOnChkbox();
}
public void addListenerOnChkbox(){
CheckBox chkbx=(CheckBox)findViewById(R.id.checkBox1);
chkbx.setOnClickListener(new OnClickListener(){
public void onClick(View v){
if(((CheckBox) v).isChecked()){
Toast.makeText(MainActivity.this, "Bro..try Android :)", Toast.LENGTH_LONG);
}
}
});
}
public void addListenerOnButton(){
final CheckBox chkbx=(CheckBox)findViewById(R.id.checkBox1);
final CheckBox chkbx2=(CheckBox)findViewById(R.id.checkBox2);
final CheckBox chkbx3=(CheckBox)findViewById(R.id.checkBox3);
final Button btn=(Button)findViewById(R.id.btn);
btn.setOnClickListener(new OnClickListener(){
public void onClick(View v){
StringBuffer result=new StringBuffer();
result.append("IPhone check: ").append(chkbx.isChecked());
result.append("\nAndroid check: ").append(chkbx2.isChecked());
result.append("\nWindows Mobile Check: ").append(chkbx3.isChecked());
Toast.makeText(MainActivity.this, result.toString(), Toast.LENGTH_LONG).show();
}
});
}
}
任何帮助将大大AP preciated。
Any help would be greatly appreciated.
推荐答案
您按钮标签未关闭进 activity_main.xml中
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Display"
关闭了
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Display" />
和清洁工程。你的 R.java
类将会产生。
and clean project. Your R.java
class will be generated.
这篇关于Suddently,&QUOT; R.java&QUOT;从我英寸时删除;复选框&QUOT;程序?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文