我开发了一个Android应用程序。
这里我必须在所有android活动上设置tabbar底部。我能做什么。请给我解决这些问题。
我有10个活动意味着tabbar在所有10个活动上显示在botton上。我可以在android.please帮助我做。
这是我的第一项活动：
setContentView(R.layout.tabbar);
TabHost tabHost = getTabHost();
TabHost.TabSpec spec;
Intent intent;
TabSpec dbspec = tabHost.newTabSpec("Home");
dbspec.setIndicator("Home", getResources().getDrawable(R.drawable.home));
Intent dbIntent = new Intent(this, MainActivity.class);
dbspec.setContent(dbIntent);
tabHost.addTab(dbspec);
TabSpec orderspec = tabHost.newTabSpec("Cart");
orderspec.setIndicator("Cart", getResources().getDrawable(R.drawable.cart));
Intent orderIntent = new Intent(this, ViewCartActivity.class);
orderspec.setContent(orderIntent);
tabHost.addTab(orderspec);
TabSpec settingspec = tabHost.newTabSpec("My Account");
settingspec.setIndicator("My Account", getResources().getDrawable(R.drawable.myaccount));
Intent settingIntent = new Intent(this, CustomerLogin.class);
settingspec.setContent(settingIntent);
tabHost.addTab(settingspec);
tabbar.xml：
<?xml version="1.0" encoding="utf-8"?>
<TabHost
android:id="@android:id/tabhost"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:layout_width="match_parent"
android:id="@+id/linearLayout1"
android:layout_height="match_parent">
<TabWidget
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@android:id/tabs"
android:layout_alignParentBottom="true">
</TabWidget>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@android:id/tabcontent">
</FrameLayout>
</RelativeLayout>
</TabHost>
在第一个选项卡中必须执行MainActivity（GridView）活动。它被很好地激活。在主要活动中我必须clik任何项目意味着它转到SubCate（listview）活动。我还必须在底部显示tabbar。我怎么设置。
在subcate.xml文件中包含以下代码：
<include
android:id="@+id/footer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
layout="@layout/tabbar" />
但是tabbar不显示。这里有错误。请帮助我。
答案 0 :(得分：2)
请在下面的代码中写下代码而不是代码，以便在一个TabActivity中添加多个活动，它将解决您的问题。
ActivityStack.java
public class ActivityStack extends ActivityGroup {
private Stack<String> stack;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (stack == null)
stack = new Stack<String>();
// start default activity
push("FirstStackActivity", new Intent(this, Tab_SampleActivity.class));
}
@Override
public void finishFromChild(Activity child) {
pop();
}
@Override
public void onBackPressed() {
pop();
}
public void push(String id, Intent intent) {
Window window = getLocalActivityManager().startActivity(id, intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
if (window != null) {
stack.push(id);
setContentView(window.getDecorView());
}
}
public void pop() {
if (stack.size() == 1)
finish();
LocalActivityManager manager = getLocalActivityManager();
manager.destroyActivity(stack.pop(), true);
if (stack.size() > 0) {
Intent lastIntent = manager.getActivity(stack.peek()).getIntent();
Window newWindow = manager.startActivity(stack.peek(), lastIntent);
setContentView(newWindow.getDecorView());
}
}
}
TabActivity.java
public class TabActivity extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tab_screen);
TabHost tabHost = getTabHost();
Intent intent = new Intent().setClass(this, ActivityStack.class);
TabHost.TabSpec spec = tabHost.newTabSpec("tabId").setIndicator("Temp", getResources().getDrawable(R.drawable.home));
spec.setContent(intent);
tabHost.addTab(spec);
Intent intent1 = new Intent().setClass(this, ActivityStack.class);
TabHost.TabSpec spec1 = tabHost.newTabSpec("tabId").setIndicator("Temp", getResources().getDrawable(R.drawable.invoice));
spec1.setContent(intent1);
tabHost.addTab(spec1);
tabHost.setCurrentTab(0);
}
}
FirstActivity.java
public class FirstActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView textView = new TextView(this);
textView.setText("Tab Sample Activity ");
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setClass(getParent(), SecondActivity.class);
ActivityStack activityStack = (ActivityStack) getParent();
activityStack.push("SecondActivity", intent);
}
});
setContentView(textView);
}
}
SecondActivity.java
public class SecondActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView textView = new TextView(this);
textView.setText("First Stack Activity ");
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setClass(getParent(), ThirdActivity.class);
ActivityStack activityStack = (ActivityStack) getParent();
activityStack.push("ThirdActivity", intent);
}
});
setContentView(textView);
}
}
ThirdActivity.java
public class ThirdActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
将以下XML文件添加到res / layout文件夹中。
1）tab_screen.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" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:padding="3dp" >
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@android:id/tabs"
android:layout_weight="1" />
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" />
</RelativeLayout>
</TabHost>
2）main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
</LinearLayout>
的AndroidManifest.xml： -
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.android.tabsample"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".FirstActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".TabActivity"
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=".ActivityStack"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".SecondActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".ThirdActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
有关在一个TabActivity下添加多个活动的详细信息，请参阅以下链接。
答案 1 :(得分：0)
您可以使用此类来实现您指定的功能。
import java.util.ArrayList;
import android.app.Activity;
import android.app.ActivityGroup;
import android.app.LocalActivityManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Window;
public class TabActivityGroup extends ActivityGroup {
private ArrayList<String> mIdList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (mIdList == null)
mIdList = new ArrayList<String>();
}
/**
* This is called when a child activity of this one calls its finish method.
* This implementation calls {@link LocalActivityManager#destroyActivity} on
* the child activity and starts the previous activity. If the last child
* activity just called finish(),this activity (the parent), calls finish to
* finish the entire group.
*/
@Override
public void finishFromChild(Activity child) {
LocalActivityManager manager = getLocalActivityManager();
int index = mIdList.size() - 1;
if (index < 1) {
finish();
return;
}
manager.destroyActivity(mIdList.get(index), true);
mIdList.remove(index);
index--;
String lastId = mIdList.get(index);
Intent lastIntent = manager.getActivity(lastId).getIntent();
Window newWindow = manager.startActivity(lastId, lastIntent);
setContentView(newWindow.getDecorView());
}
/**
* Starts an Activity as a child Activity to this.
*
* @param Id
* Unique identifier of the activity to be started.
* @param intent
* The Intent describing the activity to be started.
* @throws android.content.ActivityNotFoundException.
*/
public void startChildActivity(String Id, Intent intent) {
Window window = getLocalActivityManager().startActivity(Id,
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
if (window != null) {
mIdList.add(Id);
setContentView(window.getDecorView());
}
}
/**
* The primary purpose is to prevent systems before
* android.os.Build.VERSION_CODES.ECLAIR from calling their default
* KeyEvent.KEYCODE_BACK during onKeyDown.
*/
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
// preventing default implementation previous to
// android.os.Build.VERSION_CODES.ECLAIR
return true;
}
return super.onKeyDown(keyCode, event);
}
/**
* Overrides the default implementation for KeyEvent.KEYCODE_BACK so that
* all systems call onBackPressed().
*/
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
onBackPressed();
return true;
}
return super.onKeyUp(keyCode, event);
}
/**
* If a Child Activity handles KeyEvent.KEYCODE_BACK. Simply override and
* add this method.
*/
@Override
public void onBackPressed() {
int length = mIdList.size();
if (length > 1) {
Activity current = getLocalActivityManager().getActivity(
mIdList.get(length - 1));
current.finish();
}
}
}
通过扩展TabActivitygroup
创建如下的中间活动import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
public class InterMediateActivity extends TabActivityGroup{
String TabID;
String TabName;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
TabID=getIntent().getStringExtra("TabID");
TabName=getIntent().getStringExtra("TabName");
Log.i("Tab from intermediate",""+TabID+" "+TabName);
filterTabs(TabID);
}
private void filterTabs(String TabID)
{
if(TabID.trim().equals("Home"))
{
startChildActivity("Options", new Intent(this,HomePage.class));
//TabsUtil.setTabIndicator(specTab,"Wall", null, tabView);
}
if(TabID.trim().equals("Menu"))
{
startChildActivity("Options", new Intent(this,MenuPage.class));
//TabsUtil.setTabIndicator(specTab,"Wall", null, tabView);
}
if(TabID.trim().equals("Gallery"))
{
Log.i("GALLERY check", "gallery check");
startChildActivity("Options", new Intent(this,GalleryPage.class));
}
if(TabID.trim().equals("Aboutus"))
{
startChildActivity("Options", new Intent(this,AboutUsPage.class));
}
if(TabID.trim().equals("Location"))
{
startChildActivity("Options", new Intent(this,LocationList.class));
}
if(TabID.trim().equals("Events"))
{
startChildActivity("Options", new Intent(this,EventsPage.class));
}
if(TabID.trim().equals("TipCalculator"))
{
startChildActivity("Options", new Intent(this,TipCalculatorPage.class));
}
if(TabID.trim().equals("Special"))
{
startChildActivity("Options", new Intent(this,SpecialPage.class));
}
if(TabID.trim().equals("NowRunning"))
{
startChildActivity("Options", new Intent(this,NowRunningPage.class));
}
if(TabID.trim().equals("ShowTimes"))
{
startChildActivity("Options", new Intent(this,ShowTimePage.class));
}
if(TabID.trim().equals("GpsCoupon"))
{
startChildActivity("Options", new Intent(this,GPSCouponPage.class));
}
if(TabID.trim().equals("UpcomingMovieNames"))
{
startChildActivity("Options", new Intent(this,UpcomingPage.class));
}
if(TabID.trim().equals("PriceListOfServices"))
{
startChildActivity("Options", new Intent(this,ServicesPage.class));
}
if(TabID.trim().trim().equals("NewsLetter"))
{
Log.i("newsletter check", "newsletter check");
startChildActivity("Options", new Intent(this,NewsLetter.class));
}
if(TabID.trim().trim().equals("Website"))
{
startChildActivity("Options", new Intent(this,WebSitePage.class));
}
}
}
而不是直接从tabactivity设置选项卡，您可以在中间活动中设置它们。然后从tabactivity调用Intermediate活动。
Intent intent = new Intent(this, InterMediateActivity.class);
intent.putExtra("TabID", item.elementAt(0));
intent.putExtra("TabName", item.elementAt(1));