android 跳转并传递参数

package com.sun.hello;

import android.app.Activity;

import android.content.Intent;

import android.location.GpsStatus.Listener;

import android.net.Uri;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class HelloActivity extends Activity {

private Button button = null;

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

button = (Button) findViewById(R.id.but1);

button.setOnClickListener(listener);

}

private OnClickListener listener = new OnClickListener() {

public void onClick(View v) {

// TODO Auto-generated method stub

Intent intent = new Intent();

intent.setClass(HelloActivity.this, SecondActivity.class);//

intent.putExtra("str","Intent demo");

startActivity(intent);

}

};

}

SecondActivity。java

package com.sun.hello;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.widget.Button;

import android.widget.TextView;

public class SecondActivity extends Activity {

private Button button;

private TextView secondTxt;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.secondmain);

Intent intent=getIntent();

Bundle bundle=intent.getExtras();

String str=bundle.getString("str");

secondTxt=(TextView)findViewById(R.id.secondTxt);

secondTxt.setText(str);

}

main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" >
<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Button android:id="@+id/but1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Call" />
</LinearLayout>

secondmain.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" >
<TextView android:id="@+id/secondTxt" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="second" /> <Button android:id="@+id/secondbut1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="SecondText" />
</LinearLayout>

AndroidManifest.xml <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.sun.hello" android:versionCode="1" android:versionName="1.0" >
<uses-sdk android:minSdkVersion="15" />
<application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".HelloActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".SecondActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.CALL_PHONE" /> <uses-permission android:name="android.permission.SEND_SMS"/> </manifest>

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