android - 使用顶部的选项卡显示不同的活动

Question

我正在做一个项目，我需要通过从顶部选择不同的选项卡在单个窗口中显示不同的视图。

我在谷歌上搜索了很多这个主题，但我不知道这个视图使用了什么确切的术语，所以很难搜索它。我正在研究这样的观点，

我已经经历了几个这样的例子

而这个

但我无法得到想要的答案。

任何可以指导我实现此视图的有用链接都会有所帮助。

Answer 1

tab_host.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost
android:id="@android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent" >

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

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="#0F5EC6"
        android:orientation="horizontal" >

        <Button
            android:id="@+id/back"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="5dp"
            android:text="Back" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="80dp"
            android:gravity="center"
            android:text="ThirdEye"
            android:textSize="20dp"
            android:textStyle="bold" />

        <Button
            android:id="@+id/logout"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="30dp"
            android:gravity="center"
            android:text="Logout" />
    </LinearLayout>

    <TabWidget
        android:id="@android:id/tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <FrameLayout
        android:id="@android:id/tabcontent"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1" />
</LinearLayout>

选项卡活动

public class PostTabActivity extends TabActivity implements TabHost.OnTabChangeListener   {
private TabHost mTabHost;
Button back,logout;
private String sessid,Name;
double lati,longi;
@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    final Intent intent = getIntent();
    Bundle extras = getIntent().getExtras(); 
    if (extras != null) { 
       sessid = extras.getString("sid"); 
       lati = extras.getDouble("EXTRA_latitude"); 
       longi = extras.getDouble("EXTRA_longitude");
       Name= extras.getString("NICK_NAME");
       System.out.println("........................"+lati+".................."+longi);
    } 
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.tab_host);
    logout = (Button) findViewById(R.id.logout);
    logout.setOnTouchListener(new OnTouchListener()
    {

        public boolean onTouch(View v, MotionEvent event) {
            switch(event.getAction())
            {
            case MotionEvent.ACTION_DOWN:
                break;
            case MotionEvent.ACTION_UP:
            new Logout(PostTabActivity.this,sessid);
                //finish();
                break;  
            }
            return true;
        }
    });
    back= (Button) findViewById(R.id.back);
    back.setOnTouchListener(new OnTouchListener()
    {

        public boolean onTouch(View v, MotionEvent event) {
            switch(event.getAction())
            {
            case MotionEvent.ACTION_DOWN:
                break;
            case MotionEvent.ACTION_UP:
                Intent myIntent = new Intent(PostTabActivity.this, GetPost.class);
                myIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                myIntent.putExtra("EXTRA_SESSION_ID", sessid);
                myIntent.putExtra("EXTRA_latitude",lati);
                myIntent.putExtra("EXTRA_longitude", longi);
                myIntent.putExtra("NICK_NAME", Name);
                startActivity(myIntent);
                finish();
                break;  
            }
            return true;
        }


    }
        );


    mTabHost = getTabHost();
    mTabHost.setOnTabChangedListener(this);

    /*Tab One */

    Intent mIntent= new Intent("proto.thirdeye.PostText");
    mIntent.setClass(this, PostText.class);
    mIntent.putExtra("sid",sessid);
    mIntent.putExtra("EXTRA_latitude",lati);
    mIntent.putExtra("EXTRA_longitude", longi);
    mIntent.putExtra("NICK_NAME", Name);

    mTabHost.addTab(mTabHost.newTabSpec("text1")
            .setIndicator("Text",
                    getResources().getDrawable(R.drawable.image))
            .setContent(mIntent));

    /*Tab Two */

    Intent mIntent1 = new Intent("proto.thirdeye.PostImage");
    mIntent1.setClass(this, PostImage.class);
    mIntent1.putExtra("sid",sessid);
    mIntent1.putExtra("EXTRA_latitude",lati);
    mIntent1.putExtra("EXTRA_longitude", longi);
    mIntent1.putExtra("NICK_NAME", Name);
    mTabHost.addTab(mTabHost.newTabSpec("image1")
            .setIndicator("Image",
                    getResources().getDrawable(R.drawable.image))
            .setContent(mIntent1));


    /*Tab Three */

    Intent mIntent2 = new Intent("proto.thirdeye.PostVideo");
    mIntent2.setClass(this, PostVideo.class);
    mIntent2.putExtra("sid",sessid);
    mIntent2.putExtra("EXTRA_latitude",lati);
    mIntent2.putExtra("EXTRA_longitude", longi);
    mIntent2.putExtra("NICK_NAME", Name);
    mTabHost.addTab(mTabHost.newTabSpec("video")
            .setIndicator("Video",
                    getResources().getDrawable(R.drawable.image))
            .setContent(mIntent2));

    mTabHost.setCurrentTab(0);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        onBackPressed();

    }

    return super.onKeyDown(keyCode, event);
}

public void onBackPressed() {
    Intent myIntent = new Intent(PostTabActivity.this, GetPost.class);
    myIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    myIntent.putExtra("EXTRA_SESSION_ID", sessid);
    myIntent.putExtra("EXTRA_latitude",lati);
    myIntent.putExtra("EXTRA_longitude", longi);
    myIntent.putExtra("NICK_NAME", Name);
    startActivity(myIntent);
    finish();
    return;
}
public void onTabChanged(String tabId) {
    // TODO Auto-generated method stub
    Log.i("Aru","                    "+tabId);
    Activity activity = getLocalActivityManager().getActivity(tabId);
    if (activity != null) {
        activity.onWindowFocusChanged(true);
    }
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
  super.onSaveInstanceState(savedInstanceState);
  // Save UI state changes to the savedInstanceState.
  // This bundle will be passed to onCreate if the process is
  // killed and restarted.
  savedInstanceState.putString("sid",sessid);
  savedInstanceState.putDouble("EXTRA_latitude",lati);
  savedInstanceState.putDouble("EXTRA_longitude",longi);
  savedInstanceState.putString("NICK_NAME", Name);
  // etc.
}
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
  super.onRestoreInstanceState(savedInstanceState);
  // Restore UI state from the savedInstanceState.
  // This bundle has also been passed to onCreate.
  sessid = savedInstanceState.getString("sid");
  lati = savedInstanceState.getDouble("EXTRA_latitude");
  longi = savedInstanceState.getDouble("EXTRA_longitude");
  Name = savedInstanceState.getString("NICK_NAME");
}
@Override
protected void onPause() {
    // TODO Auto-generated method stub
    super.onPause();
    //MyApplication.activityPaused();
}
@Override
protected void onResume() {
    // TODO Auto-generated method stub
    super.onResume();
    //MyApplication.activityResumed();
}
 }

您可以为 PostImage、PostVideo、PostText 定义自己的布局。根据您的需要自定义它。

Answer 2

android中有很多类型TabHost。您可以默认使用它，也可以根据需要对其进行自定义。

简单地看一下这个例子。它将为您提供默认的 androidtabHost看看下面的代码，它将TabHost根据您的需要提供 -

主.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost" android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout android:orientation="vertical"
        android:layout_width="fill_parent" android:layout_height="fill_parent">
        <TabWidget android:id="@android:id/tabs"
            android:layout_width="fill_parent" android:layout_height="wrap_content" />
        <FrameLayout android:id="@android:id/tabcontent"
            android:layout_width="fill_parent" android:layout_height="fill_parent">
        </FrameLayout>
    </LinearLayout>
</TabHost>

而且，也请看这里。