2013.03.19（2）———android ActivityGroup的使用

2013.03.19（2）———androidActivityGroup的使用

参考：http://hkp.iteye.com/blog/1185482

场景：现在我需要在tab里面进行activity的跳转，但是tab工具栏仍然要显示，也就是一个tab的内部activity跳转

平常写的tab，不管是button、gridview或者radiogroup，在对应的activity点击跳转之后，就直接跳出tab了，然后我就google了下，发现大家都说用ActivityGroup，我就参见上面的链接，写了一个简单例子

1、tab

布局文件如下：

<?xml version="1.0" encoding="utf-8"?>
<TabHost 
    android:id="@android:id/tabhost" 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" 
    xmlns:android="http://schemas.android.com/apk/res/android">

    <LinearLayout 
    android:orientation="vertical"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent">

        <FrameLayout 
        android:id="@android:id/tabcontent"
        android:layout_width="fill_parent" 
        android:layout_height="0.0dip"
        android:layout_weight="1.0" />

        <TabWidget 
        android:id="@android:id/tabs" 
        android:visibility="gone"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="0.0" />

        <RadioGroup 
        android:id="@+id/more_tab_radiogroup"
        android:gravity="center_vertical"
        android:layout_gravity="bottom" 
        android:orientation="horizontal"
        android:padding="2dip"
        android:background="@drawable/tab_background"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content">

            <RadioButton 
                android:id="@+id/more_tab_rdo_my"
                android:text="@string/tab_my"
                android:drawableTop="@drawable/tab_icon_my" 
                style="@style/tab_item_background"
                android:checked="true" 
                />

            <RadioButton 
                android:id="@+id/more_tab_rdo_attention"
                android:text="@string/tab_attention"
                android:drawableTop="@drawable/tab_icon_attention" 
                style="@style/tab_item_background" />

            <RadioButton 
                android:id="@+id/more_tab_rdo_camera"
                android:text="@string/tab_camera"
                android:drawableTop="@drawable/tab_icon_camera" 
                style="@style/tab_item_background" />

            <RadioButton
                android:id="@+id/more_tab_rdo_piazza" 
                android:text="@string/tab_piazza"
                android:drawableTop="@drawable/tab_icon_piazza" 
                style="@style/tab_item_background" />

            <RadioButton 
                android:id="@+id/more_tab_rdo_more"
                android:text="@string/tab_more"
                android:drawableTop="@drawable/tab_icon_more" 
                style="@style/tab_item_background" />

        </RadioGroup>

    </LinearLayout>

</TabHost>

MainTabActivity.java

package com.wmyc.activity;

import android.app.TabActivity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TabHost;

public class MainTabActivity extends TabActivity implements BaseInterface,OnCheckedChangeListener{
    //================log标记=====================
    private final static String TAG = MainTabActivity.class.getSimpleName();

    //================一些常量=====================
    private final static int TAB_MY = 0;
    private final static int TAB_ATTENTION = 1;
    private final static int TAB_CAMERA = 2;
    private final static int TAB_PIAZZA = 3;
    private final static int TAB_MORE = 4;

    //================界面相关=====================
    private Context _context;
    private RadioGroup mRadioGroup;
    private TabHost mTabHost;

    //================逻辑相关=====================
    //当前选中的tab
    private int mCurrentIndex;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main_tab);

        this.initVars();
        this.initComponent();
        this.loadData();
    }

    @Override
    public void initVars() {
        _context = this;

        mCurrentIndex = TAB_MY;
    }

    @Override
    public void initComponent() {
        mRadioGroup = (RadioGroup)findViewById(R.id.more_tab_radiogroup);
        mRadioGroup.setOnCheckedChangeListener(this);
        initTabHost();
    }

    @Override
    public void loadData() {

    }

    private void initTabHost() {
        mTabHost = getTabHost();
        mTabHost.addTab(mTabHost.newTabSpec("tab my").setIndicator("")
                .setContent(new Intent(this, FirstGroupTab.class)));
        mTabHost.addTab(mTabHost.newTabSpec("tab attention").setIndicator("")
                .setContent(new Intent(this, SecondTab.class)));
        mTabHost.addTab(mTabHost.newTabSpec("tab camera").setIndicator("")
                .setContent(new Intent(this, SecondTab.class)));
        mTabHost.addTab(mTabHost.newTabSpec("tab piazza").setIndicator("")
                .setContent(new Intent(this, SecondTab.class)));
        mTabHost.addTab(mTabHost.newTabSpec("tab more").setIndicator("")
                .setContent(new Intent(this, SecondTab.class)));

        mTabHost.setCurrentTab(mCurrentIndex);

    }

    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
        switch(checkedId){
        case R.id.more_tab_rdo_my:
            mCurrentIndex = TAB_MY;
            break;
        case R.id.more_tab_rdo_attention:
            mCurrentIndex = TAB_ATTENTION;
            break;
        case R.id.more_tab_rdo_camera:
            mCurrentIndex = TAB_CAMERA;
            break;
        case R.id.more_tab_rdo_piazza:
            mCurrentIndex = TAB_PIAZZA;
            break;
        case R.id.more_tab_rdo_more:
            mCurrentIndex = TAB_MORE;
            break;
        }
        mTabHost.setCurrentTab(mCurrentIndex);
    }

}

2、FirstTabGroup.java

/**
 * 
 */
package com.wmyc.activity;

import android.app.ActivityGroup;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.Window;

/**
 * @author HuangKaipeng hkp2006@gmail.com
 * 2011-10-5
 *
 */
public class FirstGroupTab extends ActivityGroup {

    /**
     * 一个静态的ActivityGroup变量，用于管理本Group中的Activity
     */
    public static ActivityGroup group;
    public static int currentIndex;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        System.out.println("======FirstGroupTab onCreate=============");
        group = this;
        currentIndex = 1;
    }

    @Override
    public void onBackPressed() {
        // TODO Auto-generated method stub
//      super.onBackPressed();
        //把后退事件交给子Activity处理
        group.getLocalActivityManager()
            .getCurrentActivity().onBackPressed();
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        System.out.println("======FirstGroupTab onResume=============");
        //把界面切换放到onResume方法中是因为，从其他选项卡切换回来时，
        //调用搞得是onResume方法

        //要跳转的界面
        Intent intent = null;
        if(currentIndex==1){
            intent = new Intent(this,FirstActivity.class).
                  addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }else{
            intent = new Intent(this,SecondActivity.class).
            addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        }
        //把一个Activity转换成一个View
        Window w = group.getLocalActivityManager().startActivity(""+currentIndex,intent);
        View view = w.getDecorView();
        //把View添加大ActivityGroup中
        group.setContentView(view);
    }

    @Override
    protected void onPause() {
        super.onPause();
        System.out.println("======FirstGroupTab onPause=============");
    }

    @Override
    protected void onStop() {
        super.onStop();
        System.out.println("======FirstGroupTab onStop=============");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        System.out.println("======FirstGroupTab onDestroy=============");
    }
}

3、FirstActivity

/**
 * 
 */
package com.wmyc.activity;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;

/**
 * @author HuangKaipeng hkp2006@gmail.com
 * 2011-10-5
 *
 */
public class FirstActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        System.out.println("======FirstActivity onCreate=============");
        setContentView(R.layout.first_activity);
        Bundle data = getIntent().getExtras();
//      System.out.println("result: " + data.getInt("aaa"));
        //跳转到第二个界面
        Button btn = (Button) findViewById(R.id.btn);
        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(FirstActivity.this, SecondActivity.class);
                //把一个Activity转换成一个View
                Window w = MyActivityGroup._group.getLocalActivityManager()
                        .startActivity(MyActivityGroup.STR_PRE+ 3,intent);

                View view = w.getDecorView();
                Animation hyperspaceJump = AnimationUtils.loadAnimation(FirstActivity.this,  
                        R.anim.translucent_exit);
                FirstActivity.this.getWindow().getDecorView().startAnimation(hyperspaceJump);
                hyperspaceJump = AnimationUtils.loadAnimation(FirstActivity.this,  
                        R.anim.translucent_enter);
                view.startAnimation(hyperspaceJump);
                //把View添加大ActivityGroup中
                MyActivityGroup._group.setContentView(view);
                MyActivityGroup.currentIndex = 3;
            }
        });
    }

    @Override
    protected void onStart() {
        super.onStart();
        System.out.println("======FirstActivity onStart=============");
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        System.out.println("======FirstActivity onRestart=============");
    }

    @Override
    protected void onResume() {
        super.onResume();
        System.out.println("======FirstActivity onResume=============");
    }

    @Override
    protected void onPause() {
        super.onPause();
        System.out.println("======FirstActivity onPause=============");
    }

    @Override
    protected void onStop() {
        super.onStop();
        System.out.println("======FirstActivity onStop=============");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        System.out.println("======FirstActivity onDestroy=============");
    }

}

4、SecondActivity.java

/**
 * 
 */
package com.wmyc.activity;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;

/**
 * @author HuangKaipeng hkp2006@gmail.com
 * 2011-10-5
 *
 */
public class SecondActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        System.out.println("======SecondActivity onCreate=============");
        setContentView(R.layout.second_activity);
        Button btn = (Button)this.findViewById(R.id.second_btn);
        btn.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(SecondActivity.this, MyMainActivity.class);

                Window w = MyActivityGroup._group.getLocalActivityManager()
                        .startActivity(MyActivityGroup.STR_PRE + 1,intent);
                View view = w.getDecorView();
                MyActivityGroup._group.setContentView(view);
                MyActivityGroup._group.getLocalActivityManager().destroyActivity(MyActivityGroup.STR_PRE + MyActivityGroup.currentIndex, true);
                MyActivityGroup.currentIndex = 1;
            }
        });
    }

    @Override
    public void onBackPressed() {
        // TODO Auto-generated method stub
//      super.onBackPressed();
        //后退跳转到第一个Activity界面
        Intent intent = new Intent(this, MyMainActivity.class);

        Window w = MyActivityGroup._group.getLocalActivityManager()
                .startActivity(MyActivityGroup.STR_PRE + 1,intent);
        View view = w.getDecorView();
        MyActivityGroup._group.setContentView(view);
        MyActivityGroup.currentIndex = 1;
    }
    @Override
    protected void onStart() {
        super.onStart();
        System.out.println("======SecondActivity onStart=============");
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        System.out.println("======SecondActivity onRestart=============");
    }

    @Override
    protected void onResume() {
        super.onResume();
        System.out.println("======SecondActivity onResume=============");
    }

    @Override
    protected void onPause() {
        super.onPause();
        System.out.println("======SecondActivity onPause=============");
    }

    @Override
    protected void onStop() {
        super.onStop();
        System.out.println("======SecondActivity onStop=============");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        System.out.println("======SecondActivity onDestroy=============");
    }
}

SecondTab.java就不写了，很简单一个页面