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:
- Создайте новый проект с именем TabGroupChildDemo.
- Создайте TabHostActivity и расширьте его до TabActivity.
- Создайте еще 3 вида деятельности: HomeActivity, AboutActivity, ContactActivity.
- Создайте 3 действия группы name-HomeGroupActivity, AboutGroupActivity, ContactGroupActivity.
- Создайте другое действие ChildActivity.java.
- Создайте 4 макета для дома, о, контакт, дочерняя активность, имя Activity_Home, Activity_about, Activity_contact, Activity_child.
- Создайте 3 других макета для отображения вкладок: home_tab, about_tab, contact_tab.
- Добавить активность и групповую активность в manifest.xml
- 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" ?> 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" ?> 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" ?> 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" ?> 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" ?> 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" ?> 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" ?> 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 .