Статьи

Android Child Group Activity

Здравствуйте, друзья! Сегодня я собираюсь поделиться очень важным постом для деятельности дочерней группы, означающим активность, открытую внутри Tab Group Для этого я использую Animated Activity. Эту логику я выбрал на stackoverflow.com. Надеюсь, это поможет кому-нибудь.

Снимок экрана:

  1. Создайте новый проект с именем TabGroupChildDemo.
  2. Создайте TabHostActivity и расширьте его до TabActivity.
  3. Создайте еще 3 вида деятельности: HomeActivity, AboutActivity, ContactActivity.
  4. Создайте 3 действия группы name-HomeGroupActivity, AboutGroupActivity, ContactGroupActivity.
  5. Создайте другое действие ChildActivity.java.
  6. Создайте 4 макета для дома, о, контакт, дочерняя активность, имя Activity_Home, Activity_about, Activity_contact, Activity_child.
  7. Создайте 3 других макета для отображения вкладок: home_tab, about_tab, contact_tab.
  8. Добавить активность и групповую активность в manifest.xml
  9. Добавьте изображения — home.png, about.png, contact.png, ic_tab_background в папку для рисования, загрузите изображения ниже

Мой код:

TabHostActivity.java

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package com.manish.tabdemo;
 
import android.app.TabActivity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.LinearLayout;
import android.widget.TabHost;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TabWidget;
import android.widget.TextView;
 
 
 
@SuppressWarnings("deprecation")
public class TabHostActivity extends TabActivity implements OnTabChangeListener
{
 private static final String[] TABS = { "HomeGroupActivity", "AboutGroupActivity", "ContactGroupActivity" };
 private static final String[] TAB_NAMES = { "Home", "About", "Contact"};
 public static TabHost tabs ;
    public static TabWidget tabWidget ;   
 protected Bitmap roundedImage;
    public boolean checkTabsListener = false;
  
     
    public void onCreate(Bundle icicle)
    {       
     super.onCreate(icicle);
        setContentView(R.layout.activity_tab_host);
       
        Bitmap roundedImage = BitmapFactory.decodeResource(getResources(),R.drawable.ic_tab_background);
        roundedImage = getRoundedCornerBitmap(roundedImage,3);
        
        tabs = getTabHost();
    
        tabWidget = tabs.getTabWidget();
                       
     tabs.setOnTabChangedListener(this);
         
     for (int i = 0; i < TABS.length; i++)
        {
         TabHost.TabSpec tab = tabs.newTabSpec(TABS[i]);
          
         //Asociating Components
         ComponentName oneActivity = new ComponentName("com.manish.tabdemo", "com.manish.tabdemo." + TABS[i]);
         Intent intent = new Intent().setComponent(oneActivity);          
         intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
         tab.setContent(intent);        
         //Setting the Indicator
         MyTabIndicator myTab = new MyTabIndicator(this, TAB_NAMES[i],(i+1), roundedImage);
         tab.setIndicator(myTab);
         tabs.addTab(tab);
        }
         
     checkTabsListener = true;
      
        for(int i=0;i<tabs.getTabWidget().getChildCount();i++)
        {
         tabs.getTabWidget().getChildAt(i).setBackgroundColor(Color.TRANSPARENT);
        }
         
      
  tabs.getTabWidget().getChildAt(0).setBackgroundResource(R.drawable.ic_tab_background);  
   
  //Maintaining Clicks
   
  // Home Tab Click
   
  tabWidget.getChildAt(0).setOnClickListener(new OnClickListener()
        {  
   @Override
   public void onClick(View v)
   {    
     if(HomeGroupActivity.HomeGroupStack != null && HomeGroupActivity.HomeGroupStack.mIdList.size()>1)
     {     
      HomeGroupActivity.HomeGroupStack.getLocalActivityManager().removeAllActivities();
      HomeGroupActivity.HomeGroupStack.mIdList.clear();
      HomeGroupActivity.HomeGroupStack.mIntents.clear();
      HomeGroupActivity.HomeGroupStack.mAnimator.removeAllViews();
      HomeGroupActivity.HomeGroupStack.startChildActivity("CareGroupActivity", new Intent(HomeGroupActivity.HomeGroupStack, HomeActivity.class));
      finish();
     }
      
     tabWidget.setCurrentTab(0);
     tabs.setCurrentTab(0);
     tabs.getTabWidget().getChildAt(0).setBackgroundResource(R.drawable.ic_tab_background); 
   }
        });
   
  
  // About tab Click
   
  tabWidget.getChildAt(1).setOnClickListener(new OnClickListener()
        {  
   public void onClick(View v)
   {    
    if(AboutGroupActivity.AboutGroupStack != null && AboutGroupActivity.AboutGroupStack.mIdList.size()>0)
    {
     AboutGroupActivity.AboutGroupStack.getLocalActivityManager().removeAllActivities();
     AboutGroupActivity.AboutGroupStack.mIdList.clear();     
     AboutGroupActivity.AboutGroupStack.mIntents.clear();
     AboutGroupActivity.AboutGroupStack.mAnimator.removeAllViews();           
     AboutGroupActivity.AboutGroupStack.startChildActivity("TrackingGroupActivity", new Intent(AboutGroupActivity.AboutGroupStack, AboutActivity.class));          
    }    
              
    tabWidget.setCurrentTab(1);
    tabs.setCurrentTab(1);
    tabs.getTabWidget().getChildAt(1).setBackgroundResource(R.drawable.ic_tab_background);      
   }
        });
   
  // Contact tab click
   
  tabWidget.getChildAt(2).setOnClickListener(new OnClickListener()
        {  
   public void onClick(View v)
   {    
    if(ContactGroupActivity.ContactGroupStack != null && ContactGroupActivity.ContactGroupStack.mIdList.size()>0)
    {
       
     ContactGroupActivity.ContactGroupStack.getLocalActivityManager().removeAllActivities();
     ContactGroupActivity.ContactGroupStack.mIdList.clear();     
     ContactGroupActivity.ContactGroupStack.mIntents.clear();
     ContactGroupActivity.ContactGroupStack.mAnimator.removeAllViews();           
     ContactGroupActivity.ContactGroupStack.startChildActivity("DashboardGroupActivity", new Intent(ContactGroupActivity.ContactGroupStack, ContactActivity.class));          
    }    
              
    tabWidget.setCurrentTab(2);
    tabs.setCurrentTab(2);
    tabs.getTabWidget().getChildAt(2).setBackgroundResource(R.drawable.ic_tab_background);      
   }
        });
   
 
    }
   
     
    public class MyTabIndicator extends LinearLayout
    {
  public MyTabIndicator(Context context, String label, int tabId, Bitmap bgImg)
  {
   super(context);
   LinearLayout tab = null;
   TextView tv;
   this.setGravity(Gravity.CENTER);
    
   if(tabId == 1)
   {
    tab = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.home_tab, null);
    tv = (TextView)tab.findViewById(R.id.tab_label);
    tv.setText(label);
   }
    
    
    
   else if(tabId == 2)
   {
    tab = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.about_tab, null);
    tv = (TextView)tab.findViewById(R.id.tab_label);
    tv.setText(label);
   }
   else if(tabId == 3)
   {
    tab = (LinearLayout) LayoutInflater.from(context).inflate(R.layout.contact_tab, null);
    tv = (TextView)tab.findViewById(R.id.tab_label);
    tv.setText(label);
   }
        
   this.addView(tab, new LinearLayout.LayoutParams(320/4,55));  
  
    }
 
     
     
 public void onTabChanged(String tabId)
 {     
  InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(tabs.getApplicationWindowToken(), 0);
           
        for(int i=0; i<tabs.getTabWidget().getChildCount(); i++)
  {                            
         if(tabId.equalsIgnoreCase(TABS[i]))
   {           
    tabs.getTabWidget().getChildAt(i).setBackgroundResource(R.drawable.ic_tab_background);    
   }
   else
   {
    tabs.getTabWidget().getChildAt(i).setBackgroundColor((Color.TRANSPARENT));
   }    
    
 }
 
  public static Bitmap getRoundedCornerBitmap(Bitmap bitmap,float roundPxRadius)
 {
        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
        Canvas canvas = new Canvas(output);
         
        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        final RectF rectF = new RectF(rect);
        final float roundPx =roundPxRadius;
      
        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
      
        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
      
        return output;
 }
  
 public void onResume()
 {
  super.onResume();
   
   
  //ReConstructing TabViews
  reDesignTabViews();
 }
  
 public void onPause()
 {
  super.onPause();    
 }
  
 
   
  
 /**
  * Method used to re constructing the Views at tab bar. This solves tabs disappearing issue.
  */
 public void reDesignTabViews()
 {
  MyTabIndicator myIndicator;
   
   
  //Construction of tab views....
  for(int i=0 ; i< tabWidget.getChildCount() ; i++)
  {
   myIndicator = (MyTabIndicator) tabWidget.getChildAt(i);
   myIndicator.removeAllViews();
    
   switch (i)
   {
 
     case 0:
     myIndicator.addView((LinearLayout) LayoutInflater.from(getApplicationContext()).inflate(R.layout.home_tab, null));
     break;
    case 1:   
     myIndicator.addView((LinearLayout) LayoutInflater.from(getApplicationContext()).inflate(R.layout.about_tab, null));   
     break;
    case 2:   
     myIndicator.addView((LinearLayout) LayoutInflater.from(getApplicationContext()).inflate(R.layout.contact_tab, null));   
     break;
     
   }  
  
 }
  
}

HomeActivity.java

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package com.manish.tabdemo;
 
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
 
import com.manish.util.AnimatedActivity;
 
public class HomeActivity extends Activity {
 Button button1;
 
  @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_home);
  button1 = (Button) findViewById(R.id.button1);
  button1.setOnClickListener(new OnClickListener() {
 
    @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
 
     AnimatedActivity pActivity = (AnimatedActivity) HomeActivity.this
      .getParent();
    Intent intent = new Intent(HomeActivity.this,
      ChildActivity.class);
    pActivity.startChildActivity("home_screen", intent);
   }
  });
 }
 
  @Override
 public void onBackPressed() {
  System.out.println("***back*");
  HomeActivity.super.onBackPressed();
 }
 
  @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  System.out.println("****event****" + event + "****" + keyCode);
  if (keyCode == KeyEvent.KEYCODE_BACK) {
 
    finish();
   return true;
  }
  return super.onKeyDown(keyCode, event);
 }
}

HomeGroupActivity.java

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package com.manish.tabdemo;
 
import android.content.Intent;
import android.os.Bundle;
 
import com.manish.util.AnimatedActivity;
 
public class HomeGroupActivity extends AnimatedActivity {
 public static HomeGroupActivity HomeGroupStack;
 
  @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  HomeGroupStack = HomeGroupActivity.this;
 
   startChildActivity("HomeGroupActivity", new Intent(this,
    HomeActivity.class));
 }
}

AboutActivity.java

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package com.manish.tabdemo;
 
import android.app.Activity;
import android.os.Bundle;
 
public class AboutActivity extends Activity {
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_about);
 }
}

AboutGroupActivity.java

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package com.manish.tabdemo;
 
import android.content.Intent;
import android.os.Bundle;
 
import com.manish.util.AnimatedActivity;
 
public class AboutGroupActivity extends AnimatedActivity {
 public static AboutGroupActivity AboutGroupStack;
 
  @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  AboutGroupStack = AboutGroupActivity.this;
 
   startChildActivity("AboutGroupActivity", new Intent(this,
    AboutActivity.class));
 }
}

ContactActivity.java

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package com.manish.tabdemo;
 
import android.app.Activity;
import android.os.Bundle;
 
public class ContactActivity extends Activity {
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_contact);
 }
}

ContactGroupActivity.java

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package com.manish.tabdemo;
 
import android.content.Intent;
import android.os.Bundle;
 
import com.manish.util.AnimatedActivity;
 
public class ContactGroupActivity extends AnimatedActivity {
 public static ContactGroupActivity ContactGroupStack;
 
  @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  ContactGroupStack = ContactGroupActivity.this;
 
   startChildActivity("ContactGroupActivity", new Intent(this,
    ContactActivity.class));
 }
}

ChildActivity.java

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package com.manish.tabdemo;
 
import android.app.Activity;
import android.os.Bundle;
 
public class ChildActivity extends Activity {
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_child);
 }
}

activity_tab_host.xml

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<?xml version="1.0" encoding="utf-8"?>
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
 
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >
 
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="0dip"
            android:layout_weight="1" />
 
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="-4dp"
            android:layout_weight="0" />
    </LinearLayout>
 
</TabHost>

activity_home.xml

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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#0099CC" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Home Tab"
        android:textColor="#ffffff"
        android:textSize="35sp" />
 
    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView1"
        android:layout_centerHorizontal="true"
        android:text="Open Child" />
 
</RelativeLayout>

home_tab.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:gravity="center"
    android:orientation="vertical" >
 
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="1dip"
        android:layout_marginTop="2dip"
        android:background="@drawable/home" >
    </TextView>
 
    <TextView
        android:id="@+id/tab_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Home"
        android:textColor="#0099CC" />
 
</LinearLayout>

activity_about.xml

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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#808080" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="About Tab"
        android:textColor="#ffffff"
        android:textSize="35sp" />
 
</RelativeLayout>

about_tab.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:gravity="center"
    android:orientation="vertical" >
 
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="1dip"
        android:layout_marginTop="2dip"
        android:background="@drawable/about" >
    </TextView>
 
    <TextView
        android:id="@+id/tab_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="About"
        android:textColor="#0099CC" />
 
</LinearLayout>

activity_contact.xml

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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#ffdddd" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Contact Tab"
        android:textColor="#000000"
        android:textSize="35sp" />
 
</RelativeLayout>

contact_tab.xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:gravity="center"
    android:orientation="vertical" >
 
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="1dip"
        android:layout_marginTop="2dip"
        android:background="@drawable/contact" >
    </TextView>
 
    <TextView
        android:id="@+id/tab_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Contact"
        android:textColor="#0099CC" />
 
</LinearLayout>

activity_child.xml

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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:background="#0099CC"
    android:layout_height="fill_parent" >
 
    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Child Activity"
        android:textSize="35sp"
        android:textColor="#ffffff" />
 
</RelativeLayout>

manifest.xml

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<?xml version="1.0" encoding="utf-8"?>
    package="com.manish.tabdemo"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />
 
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.manish.tabdemo.TabHostActivity"
            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="com.manish.tabdemo.HomeActivity" />
        <activity android:name="com.manish.tabdemo.AboutActivity" />
        <activity android:name="com.manish.tabdemo.ContactActivity" />
        <activity android:name="com.manish.tabdemo.ChildActivity" />
        <activity android:name="com.manish.tabdemo.AboutGroupActivity" />
        <activity android:name="com.manish.tabdemo.ContactGroupActivity" />
        <activity android:name="com.manish.tabdemo.HomeGroupActivity" />
    </application>
 
</manifest>

Вы можете сослаться на ссылку ниже для оригинального сообщения для «простой активности хоста вкладки» — http://www.androidhub4you.com/2013/04/android-tabactivity-tab-layout-demo-tab.html

Ссылка: Android Child Group Деятельность от нашего партнера JCG Маниша Шриваставы в блоге Android Hub 4 you .