package com.demo.android.Bmi;import java.text.DecimalFormat;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.view.View.OnClickListener;public class Report extends Activity {
//Called when the activity is first created.
private Button button_back;
private TextView view_result;
private TextView view_suggest;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.report);
findViews();
setListeners();
showResults();
}
private void findViews(){
button_back=(Button)findViewById(R.id.report_back);
view_result=(Button)findViewById(R.id.result);
view_suggest=(Button)findViewById(R.id.suggest);
}
private void showResults(){
DecimalFormat nf=new DecimalFormat("0.00");
Bundle bundle=this.getIntent().getExtras();
Double height=
Double.parseDouble(bundle.getString("KEY_HEIGHT"))/100;
Double weight=
Double.parseDouble(bundle.getString("KEY_WEIGHT"));
Double BMI=weight/(height*height);
view_result.setText(getString(R.string.bmi_result)+nf.format(BMI));
//Give health advice
if (BMI>25){
view_suggest.setText(R.string.advice_heavy);
}
else if (BMI<20){
view_suggest.setText(R.string.advice_light);
}
else{
view_suggest.setText(R.string.advice_average);
}
}
private void setListeners(){
button_back.setOnClickListener(backMain);
}
private button_back.onClickListener backMain=new button_back.onClickListener(){
public void onCreate(View v){
//Close this activity
Report.this.finish();
}
};
}请指导。
问题的关键,与解决方法
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.view.View.OnClickListener;public class Report extends Activity {
//Called when the activity is first created.
private Button button_back;
private TextView view_result;
private TextView view_suggest;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.report);
findViews();
setListeners();
showResults();
}
private void findViews(){
button_back=(Button)findViewById(R.id.report_back);
view_result=(Button)findViewById(R.id.result);
view_suggest=(Button)findViewById(R.id.suggest);
}
private void showResults(){
DecimalFormat nf=new DecimalFormat("0.00");
Bundle bundle=this.getIntent().getExtras();
Double height=
Double.parseDouble(bundle.getString("KEY_HEIGHT"))/100;
Double weight=
Double.parseDouble(bundle.getString("KEY_WEIGHT"));
Double BMI=weight/(height*height);
view_result.setText(getString(R.string.bmi_result)+nf.format(BMI));
//Give health advice
if (BMI>25){
view_suggest.setText(R.string.advice_heavy);
}
else if (BMI<20){
view_suggest.setText(R.string.advice_light);
}
else{
view_suggest.setText(R.string.advice_average);
}
}
private void setListeners(){
button_back.setOnClickListener(backMain);
}
private button_back.onClickListener backMain=new button_back.onClickListener(){
public void onCreate(View v){
//Close this activity
Report.this.finish();
}
};
}请指导。
问题的关键,与解决方法
button_back.setOnClickListener(backMain);
}
private Button.OnClickListener backMain=new Button.OnClickListener(){ public void onCreate(View v){
//Close this activity
Report.this.finish();
}
};
在线等高手解答
Error in an XML file: aborting build创建一个新的Acitity 布置它对应的layout下的 xml文件OtherAcitityMani.xml 时出现这个错误我只要一添加一个 xml 并将 原来的main.xml中的数据复制过去 就出现这个错误 复制的xml数据时最简单的 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</LinearLayout>