2013.03.19（2）———android ActivityGroup的使用

2013.03.19（2）———android ActivityGroup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

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