想通过bundle实现不同activity之间的跳转。mainactivity.javapackage com.example.test3;import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;public class MainActivity extends Activity {    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button1=(Button)findViewById(R.id.button1);
        button1.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
 EditText edittext1=(EditText)findViewById(R.id.edittext1);
 double high= Double.parseDouble(edittext1.getText().toString());
 
 Intent intent=new Intent();
 intent.setClass(MainActivity.this, activity2.class);
 
 Bundle bundle=new Bundle();
 bundle.putDouble("high", high);
 
 intent.putExtras(bundle);
   
 startActivity(intent); // 调用新的activity
}
});
    }    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
}activity 2
package com.example.test3;import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class activity2 extends Activity{
 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout);

        Bundle bundle=this.getIntent().getExtras();
        TextView  textView2=(TextView)findViewById(R.id.textview2);
    
int high=bundle.getInt("high");
textView2.setText(high);


    }   
}
activity_main.xml
<LinearLayout 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" >   <EditText
        android:inputType="text"
        android:id="@+id/edittext1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
         />    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="selfDestruct"
        android:text="@string/hello_world" /></LinearLayout>layout.xml
<?xml version="1.0" encoding="utf-8"?>
<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" >    <TextView
        android:id="@+id/textview2"     
        android:layout_width="fill_parent"     
        android:layout_height="wrap_content"
        android:text="@string/app_name" 
        />  
    <!-- 调用style.xml中设置的样式 --> 
    <!-- 给textview设置id,在程序中调用 -->
  <!-- 调用string。xml中的内容。 -->  
</RelativeLayout>
manifest.xml<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.test3"
    android:versionCode="1"
    android:versionName="1.0" >    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
      <activity android:name="activity2"></activity>  
      </application></manifest>R.java
/* AUTO-GENERATED FILE.  DO NOT MODIFY.
 *
 * This class was automatically generated by the
 * aapt tool from the resource data it found.  It
 * should not be modified by hand.
 */package com.example.test3;public final class R {
    public static final class attr {
    }
    public static final class drawable {
        public static final int ic_action_search=0x7f020000;
        public static final int ic_launcher=0x7f020001;
    }
    public static final class id {
        public static final int button1=0x7f070001;
        public static final int edittext1=0x7f070000;
        public static final int menu_settings=0x7f070003;
        public static final int textview2=0x7f070002;
    }
    public static final class layout {
        public static final int activity_main=0x7f030000;
        public static final int layout=0x7f030001;
    }
    public static final class menu {
        public static final int activity_main=0x7f060000;
    }
    public static final class string {
        public static final int app_name=0x7f040000;
        public static final int hello_world=0x7f040001;
        public static final int menu_settings=0x7f040002;
        public static final int title_activity_main=0x7f040003;
    }
    public static final class style {
        public static final int AppTheme=0x7f050000;
    }
}
error.log
10-28 11:35:56.340: E/Trace(2592): error opening trace file: No such file or directory (2)
10-28 11:36:02.352: E/AndroidRuntime(2592): FATAL EXCEPTION: main
10-28 11:36:02.352: E/AndroidRuntime(2592): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test3/com.example.test3.activity2}: android.content.res.Resources$NotFoundException: String resource ID #0x0
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.ActivityThread.access$600(ActivityThread.java:130)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.os.Looper.loop(Looper.java:137)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.ActivityThread.main(ActivityThread.java:4745)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at java.lang.reflect.Method.invokeNative(Native Method)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at java.lang.reflect.Method.invoke(Method.java:511)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at dalvik.system.NativeStart.main(Native Method)
10-28 11:36:02.352: E/AndroidRuntime(2592): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x0
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.content.res.Resources.getText(Resources.java:229)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.widget.TextView.setText(TextView.java:3620)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at com.example.test3.activity2.onCreate(activity2.java:20)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.Activity.performCreate(Activity.java:5008)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
10-28 11:36:02.352: E/AndroidRuntime(2592):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
10-28 11:36:02.352: E/AndroidRuntime(2592):  ... 11 more