Android ActivityGroup usage

Code Section:

<? 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"> <LinearLayout android: gravity = "center_horizontal" android: layout_width = "fill_parent" android: layout_height = "wrap_content"> <TextView android: id = "@ + id/cust_title" android: layout_width = "wrap_content" android: layout_height = "wr Ap_content "android: textColor =" @ android: color/white "android: textSize =" 18sp "/> </LinearLayout> <! -- Dynamically load view in the middle --> <ScrollView android: id = "@ + id/containerBody" android: layout_width = "fill_parent" android: layout_height = "300dip"> </ScrollView> <LinearLayout android: layout_width = "fill_parent" android: layout_height = "wrap_content" android: layout_gravity = "bottom" android: orientation = "horizontal"> <! -- Function module 1 --> <ImageView android: id = "@ + id/btnModule1" android: src = "@ android: drawable/ic_dialog_dialer" android: layout_marginLeft = "7dip" android: layout_marginTop = "3dip" android: layout_marginBottom = "3dip" android: layout_width = "wrap_content" android: layout_height = "wrap_content"/> <! -- Function module 2 --> <ImageView android: id = "@ + id/btnModule2" android: src = "@ android: drawable/ic_dialog_info" android: layout_marginLeft = "7dip" android: layout_marginTop = "3dip" android: layout_marginBottom = "3dip" android: layout_width = "wrap_content" android: layout_height = "wrap_content"/> <! -- Function module button 3 --> <ImageView android: id = "@ + id/btnModule3" android: src = "@ android: drawable/ic_dialog_alert" android: layout_marginLeft = "7dip" android: layout_marginTop = "3dip" android: layout_marginBottom = "3dip" android: layout_width = "wrap_content" android: layout_height = "wrap_content"/> </LinearLayout>

package com.yek;import android.app.ActivityGroup;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageView;import android.widget.ScrollView;import android.widget.TextView;public class LearnActivity extends ActivityGroup implements OnClickListener{        private TextView title;    private ScrollView contain;    private ImageView btnOne;    private ImageView btnTwo;    private ImageView btnThree;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_group_layout);        initView();        setListener();    }        private void initView(){        title = (TextView)findViewById(R.id.cust_title);        contain = (ScrollView)findViewById(R.id.containerBody);        btnOne = (ImageView)findViewById(R.id.btnModule1);        btnTwo = (ImageView)findViewById(R.id.btnModule2);        btnThree = (ImageView)findViewById(R.id.btnModule3);    }        private void setListener(){        btnOne.setOnClickListener(this);        btnTwo.setOnClickListener(this);        btnThree.setOnClickListener(this);            }    @Override    public void onClick(View v) {        switch (v.getId()) {        case R.id.btnModule1:            btnOneListener(ModuleView1.class);            break;        case R.id.btnModule2:            btnOneListener(ModuleView2.class);            break;        case R.id.btnModule3:            btnOneListener(ModuleView3.class);            break;        }    }        private void btnOneListener(Class clazz){        contain.removeAllViews();        View view = getLocalActivityManager().startActivity("Module1", new Intent(this,clazz).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView();        contain.addView(view);    }    }

<?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="fill_parent"        android:text="@string/hello"         android:id="@+id/content"        />    </LinearLayout>

Package com. yek; import android. app. activity; import android. OS. bundle; import android. widget. textView; public class ModuleBaseActivity extends Activity {private TextView content; @ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setContentView (R. layout. main); content = (TextView) findViewById (R. id. content);}/*** set content * @ param str */public void setContentText (String str) {content. setText (str);}/*** Set background color * @ param colorId */public void setBackground (int colorId) {content. setBackgroundColor (colorId );}}

Package com. yek; import android. graphics. color; import android. OS. bundle; public class ModuleView1 extends ModuleBaseActivity {@ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setBackground (Color. RED); setContentText ("Module 1 ");}}

Package com. yek; import android. graphics. color; import android. OS. bundle; public class ModuleView2 extends ModuleBaseActivity {@ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setBackground (Color. GREEN); setContentText ("module 2 ");}}

Package com. yek; import android. graphics. color; import android. OS. bundle; public class ModuleView3 extends ModuleBaseActivity {@ Override protected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); setBackground (Color. BLUE); setContentText ("module 3 ");}}