转载（巧妙运用按钮）????? 在一个主界面中做Activity切换一般都会用TabActivity，使用方便，Activity互相之间
转载（巧妙运用按钮）
????? 在一个主界面中做Activity切换一般都会用TabActivity，使用方便，Activity互相之间相对独立，但是可定制性不强，而且修改起来很麻烦。当然也可以把layout分开，把逻辑代码全写在主界面的逻辑代码中，但是很明显可维护性相当差，这里通过ActivityGroup来解决这个问题。
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要求点击底部不同图片按钮切换不同的Activity，并在中间显示Activity对应的ContentView。
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二、 实现代码
2.1 layout.xml
<?xml?version="1.0"?encoding="utf-8"?>
<LinearLayout?xmlns:android="http://schemas.android.com/apk/res/android"
????android:layout_width="fill_parent"?android:orientation="vertical"
????android:layout_height="fill_parent">
????<LinearLayout?android:gravity="center_horizontal"
????????android:background="@drawable/myinfor2"?android:layout_width="fill_parent"
????????android:layout_height="wrap_content">
????????<TextView?android:id="@+id/cust_title"?android:textColor="@android:color/white"
????????????android:textSize="28sp"?android:text="模块1"?android:layout_width="wrap_content"
????????????android:layout_height="wrap_content"></TextView>
????</LinearLayout>
????<!--?中间动态加载View?-->
????<ScrollView?android:measureAllChildren="true"?android:id="@+id/containerBody"
????????android:layout_weight="1"?android:layout_height="fill_parent"
????????android:layout_width="fill_parent">
????</ScrollView>
????<LinearLayout?android:background="@android:color/black"
????????android:layout_gravity="bottom"?android:orientation="horizontal"
????????android:layout_width="fill_parent"?android:layout_height="wrap_content">
????????<!--?功能模块按钮1?-->
????????<ImageView?android:id="@+id/btnModule1"?android:src="@android:drawable/ic_dialog_dialer"
????????????android:layout_marginLeft="7dp"?android:layout_marginTop="3dp"
????????????android:layout_marginBottom="3dp"?android:layout_width="wrap_content"
????????????android:layout_height="wrap_content"?/>
????????<!--?功能模块按钮2?-->
????????<ImageView?android:id="@+id/btnModule2"?android:src="@android:drawable/ic_dialog_info"
????????????android:layout_marginLeft="7dp"?android:layout_marginTop="3dp"
????????????android:layout_marginBottom="3dp"?android:layout_width="wrap_content"
????????????android:layout_height="wrap_content"?/>
????????<!--?功能模块按钮3?-->
????????<ImageView?android:id="@+id/btnModule3"?android:src="@android:drawable/ic_dialog_alert"
????????????android:layout_marginLeft="7dp"?android:layout_marginTop="3dp"
????????????android:layout_marginBottom="3dp"?android:layout_width="wrap_content"
????????????android:layout_height="wrap_content"?/>
????</LinearLayout>
</LinearLayout>
2.2 TestView.java
/**
?*?使用ActivityGroup来切换Activity和Layout
?*?@author?农民伯伯
?*?@version?2010-9-7
?*?
?*/
public?class?TestView?extends?ActivityGroup?{
????private?ScrollView?container?=?null;
????@Override
????protected?void?onCreate(Bundle?savedInstanceState)?{
????????super.onCreate(savedInstanceState);
????????//?隐藏标题栏
????????requestWindowFeature(Window.FEATURE_NO_TITLE);
????????//?设置视图
????????setContentView(R.layout.layout);
????????container?=?(ScrollView)?findViewById(R.id.containerBody);
????????//?模块1
????????ImageView?btnModule1?=?(ImageView)?findViewById(R.id.btnModule1);
????????btnModule1.setOnClickListener(new?OnClickListener()?{
????????????@Override
????????????public?void?onClick(View?v)?{
????????????????container.removeAllViews();
????????????????container.addView(getLocalActivityManager().startActivity(
????????????????????????"Module1",
????????????????????????new?Intent(TestView.this,?ModuleView1.class)
????????????????????????????????.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
????????????????????????.getDecorView());
????????????}
????????});
????????//?模块2
????????ImageView?btnModule2?=?(ImageView)?findViewById(R.id.btnModule2);
????????btnModule2.setOnClickListener(new?OnClickListener()?{
????????????@Override
????????????public?void?onClick(View?v)?{
????????????????container.removeAllViews();
????????????????container.addView(getLocalActivityManager().startActivity(
????????????????????????"Module2",
????????????????????????new?Intent(TestView.this,?ModuleView2.class)
????????????????????????????????.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
????????????????????????.getDecorView());
????????????}
????????});
????????//?模块3
????????ImageView?btnModule3?=?(ImageView)?findViewById(R.id.btnModule3);
????????btnModule3.setOnClickListener(new?OnClickListener()?{
????????????@Override
????????????public?void?onClick(View?v)?{
????????????????container.removeAllViews();
????????????????container.addView(getLocalActivityManager().startActivity(
????????????????????????"Module3",
????????????????????????new?Intent(TestView.this,?ModuleView3.class)
????????????????????????????????.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP))
????????????????????????.getDecorView());
????????????}
????????});
????}
}
代码说明：
a). ModuleView1、ModuleView2、 ModuleView3分别继承自Activity。
b). 想动态改变标题可以通过cust_title获取TextView进行设置。
