学步园

这是一个简单描述了如何将一个intent 从一个activity 传递到另外一个activity 的例子程序。

需要注意的是，需要将这两个activity class添加到androidmanifest.xml中。

1.  androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?><br /> <manifest xmlns:android="http://schemas.android.com/apk/res/android"<br /> package="net.stevenliyong.examples.newactivity"><br /> <application android:icon="@drawable/icon"><br /> <activity android:name=".NewActivity" android:label="@string/app_name"><br /> <intent-filter><br /> <action android:name="android.intent.action.MAIN" /><br /> <category android:name="android.intent.category.LAUNCHER" /><br /> </intent-filter><br /> </activity></p> <p> <activity android:name="Page2"></activity><br /> </application><br /> <uses-permission android:name="android.permission.INTERNET"></uses-permission><br /> </manifest><br />

2. main.xml

<?xml version="1.0" encoding="utf-8"?><br /> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"<br /> android:orientation="vertical"<br /> android:layout_width="fill_parent"<br /> android:layout_height="fill_parent"<br /> ><br /> <TextView<br /> android:layout_width="fill_parent"<br /> android:layout_height="wrap_content"<br /> android:text="@string/description"<br /> /><br /> <Button android:id="@+id/button1"<br /> android:layout_width="wrap_content"<br /> android:layout_height="wrap_content"<br /> android:text="@string/button_text"<br /> /><br /> </LinearLayout>

2. NewActivity.java

public class NewActivity extends Activity implements View.OnClickListener {</p> <p> /** Called when the activity is first created. */<br /> @Override<br /> public void onCreate(Bundle icicle) {<br /> super.onCreate(icicle);<br /> setContentView(R.layout.main);</p> <p> Button myButton = (Button) findViewById(R.id.button1);<br /> myButton.setOnClickListener(this);</p> <p> }</p> <p> public void onClick(View arg0) {<br /> Intent myIntent = new Intent();<br /> myIntent.setClass(NewActivity.this, Page2.class);<br /> startActivity(myIntent);<br /> finish(); //finish() will ask this activity (NewActivity) to be terminated.<br /> }</p> <p>}

3.page2.xml

<?xml version="1.0" encoding="utf-8"?><br /> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"<br /> android:orientation="vertical"<br /> android:layout_width="fill_parent"<br /> android:layout_height="fill_parent"<br /> ><br /> <TextView<br /> android:layout_width="fill_parent"<br /> android:layout_height="wrap_content"<br /> android:text="@string/description"<br /> /><br /> <Button android:id="@+id/button1"<br /> android:layout_width="wrap_content"<br /> android:layout_height="wrap_content"<br /> android:text="@string/button_text"<br /> /><br /> </LinearLayout>

4.Page2.java

public class Page2 extends Activity {</p> <p> protected void onCreate(Bundle icicle)<br /> {<br /> super.onCreate(icicle);<br /> setContentView(R.layout.page2);<br /> }</p> <p>}