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
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
at com.example.test3.activity2.onCreate(activity2.java:20)
这两句话说的很清楚了