[连载 2/15] Android 从入门到精通Example 之 Two Activities

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"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="net.stevenliyong.examples.newactivity"> <application android:icon="@drawable/icon"> <activity android:name=".NewActivity" 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="Page2"></activity> </application> <uses-permission android:name="android.permission.INTERNET"></uses-permission> </manifest>

 

2. main.xml

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

2. NewActivity.java

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

 

3.page2.xml

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

 

4.Page2.java

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