标准体重测量器

                                  

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.text.weight.MainActivity" >

    <TextView
        android:id="@+id/text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="58dp"
        android:text="@string/word1"
        android:textAppearance="?android:attr/textAppearanceLarge" 
        />

    <TextView
        android:id="@+id/text2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/text1"
        android:layout_marginTop="95dp"
        android:text="@string/word2" />
    <RadioGroup 
        android:id="@+id/grop"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/text2"
        android:layout_centerHorizontal="true"
        android:orientation="horizontal"
        >
    <RadioButton
        android:id="@+id/rButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/rbmale" />
     <RadioButton
        android:id="@+id/rButton2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/rbfemale" />
</RadioGroup>
    <TextView
        android:id="@+id/text3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/text2"
        android:layout_marginTop="90dp"
        android:text="@string/word3"/>

    <EditText
        android:id="@+id/text4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/grop"
        android:layout_alignBottom="@+id/text3"
        android:hint="@string/input" >
    <requestFocus/>
    </EditText>
   

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="26dp"
        android:text="@string/b3" />
    
</RelativeLayout>

activity_show.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    
 <TextView
        android:id="@+id/tvshow"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="130dp"
        android:text="" />
</RelativeLayout>

MainActivity.java

package com.text.weight;


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;

public class MainActivity extends Activity{
	String Sex;
    private Button button1;
    private EditText test4;
    private RadioGroup sex;
    private RadioButton choose;
	protected void onCreate(Bundle savedInstanceState)
	{   
	   
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		test4 = (EditText) findViewById(R.id.text4);
		
		sex =(RadioGroup)findViewById(R.id.grop);
        sex.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
			
			@Override
			public void onCheckedChanged(RadioGroup grop, int checkedID) {
            choose=(RadioButton) findViewById(sex.getCheckedRadioButtonId());
            Sex=choose.getText().toString();
			}
		});

        
		button1 = (Button) findViewById(R.id.button1);
		button1.setOnClickListener(new ClickHandler());
		
		

				}	
	class ClickHandler 	implements OnClickListener{
			public void onClick(View view)
			{
				Intent intent = new Intent();
				intent.setClass(getApplicationContext(), ShowActivity.class);
				Bundle bundle = new Bundle();
				String High =test4.getText().toString(); 
				bundle.putString("high", High);
				bundle.putString("sex",Sex);
				intent.putExtras(bundle);
				startActivity(intent);
			}
}}

ShowActivity.java

package com.text.weight;


import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class ShowActivity extends Activity {
    private TextView tvshow;
    float weight;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_show);
		
		
		float weight;
		Bundle bundle=this.getIntent().getExtras();
		String sex=bundle.getString("sex");
		String high=bundle.getString("high");
		float High=Float.valueOf(high).floatValue();
		
		if(sex=="男")
			weight=(float)((High-80)*0.7);
		else
			weight=(float)((High-70)*0.6);
		tvshow=(TextView)findViewById(R.id.tvshow);
		tvshow.setText("你是一位"+sex+"性\n你的身高是"+high+"厘米\n你的标准体重是"+weight+"公斤\n");
}		
}

出现的问题：

数据类型的转换：bundle传送的是string，而需要的是float类型的数据，所以一开始的时候运行出来的结果是身高为0，体重为负数。