AboutActivity.java

Question

嗨我有一个看起来像这样的Android应用程序：

“主页”选项卡包含一项活动和另一项子活动。这是一个TabHost布局。 About和Contact活动只有一个活动。

当我点击Home Tab按钮时，即＆＃34;打开孩子＆＃34;它会在父级内部打开一个新活动。但是当我单击“关于”选项卡并返回“主页”选项卡时。选项卡仅从开始的主页选项卡开始。它不会显示在单击关于选项卡按钮之前打开的最后一个子活动。

我的实际应用程序将是相同的，但将包括彼此内部的级联子活动。我想要的是如果我打开主页选项卡＆gt;儿童＆gt;另一个儿童活动＆gt;另一个孩子活动，甚至我点击关于或联系人选项卡。在录制Home时，它应该从最后的opendactivity开始，即另一个孩子活动。

我应该可以从那里回到家庭活动。

我在下面添加了代码。请提出相应修改。

AboutActivity.java

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

package com.manish.tabdemo;


import com.manish.util.AnimatedActivity;

import android.content.Intent;
import android.os.Bundle;
`
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));
    }
}

ChildrenActivity

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);
    }
}

ContactActivity.java

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

package com.manish.tabdemo;


import com.manish.util.AnimatedActivity;

import android.content.Intent;
import android.os.Bundle;

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));
    }
}

HomeActivity

package com.manish.tabdemo;

import com.manish.util.AnimatedActivity;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class HomeActivity extends Activity{
    Button buttonNext;
    private boolean isClicked=true;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);
        buttonNext=(Button)findViewById(R.id.button_nxt);
        buttonNext.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                Log.e("test", "test");
                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

package com.manish.tabdemo;


import com.manish.util.AnimatedActivity;

import android.content.Intent;
import android.os.Bundle;

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));
    }
}

TabHostActivity

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));

     }

     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;

   }   
  }  
 }

}

AndroidManfest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    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>

如何在Android

AboutActivity.java

AboutGroupActivity

ChildrenActivity

ContactActivity.java

ContactGroupActivity

HomeActivity

HomeGroupActivity.java

TabHostActivity

AndroidManfest.xml

0 个答案: