【发布时间】：2014-10-21 06:48:35
【问题描述】：
我正在开发我正在处理 tabactivity 的应用程序，在第一个屏幕上我有一些按钮，当我单击按钮时，主页选项卡活动启动，并且主页选项卡活动被选中，现在我想要主页选项卡当我单击选定的主页选项卡活动时，活动被选中，它会返回，这可能吗？
这是启动时的选项卡活动，选择了主页选项卡，我希望当我再次单击选定的主页选项卡时它会返回上一个活动，任何解决方案将不胜感激谢谢。
这是我点击按钮时的第一个活动代码：
new_car.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent newCar_intent = new Intent(Car_shop_home.this, Used_vehicle_tabbarnew.class);
newCar_intent.putExtra("csHeader_logo", getIntent().getExtras().getString("csHeader_logo"));
newCar_intent.putExtra("csMakeName", getIntent().getExtras().getString("csMakeName"));
newCar_intent.putExtra("csMakeID", getIntent().getExtras().getString("csMakeID"));
newCar_intent.putExtra("bCarShop", true);
newCar_intent.putExtra("vehicle_type", "1");
newCar_intent.putExtra("DealerEmergencyNumbers", getIntent().getExtras().getString("DealerEmergencyNumbers"));
startActivity(newCar_intent);
//startActivity(k);
}
});
这是我的标签栏类：
public class Used_vehicle_tabbarnew extends TabActivity{
String csMakeName;
String csMakeID;
String csDealerID;
Bundle CarData;
String csAdvert;
String csImageUrl;
String csHeader_logo;
ProgressDialog myPd_ring;
JSONArray jsonNumberArray;
List<String> emergencyNumberList=new ArrayList<String>();
String csEmergencyNumber = "";
String csSavedDealerID;
String DealerEmergencyNumbers = "";
private ArrayAdapter<String> myEmergencyAdapter;
boolean emergency = false;
TextView title;
TextView title1;
TextView title2;
TextView title3;
int tabClick = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.e("CMH", "In Tabbar");
final TabHost mTabHost = getTabHost();
createUsedVehicleTab(mTabHost);
createFinanceTab(mTabHost);
// createEmergencyTab(mTabHost);
createFavouritesTab(mTabHost);
// createMoreTab(mTabHost);
createProfileTab(mTabHost);
DealerEmergencyNumbers = getIntent().getExtras().getString("DealerEmergencyNumbers");
csHeader_logo=getIntent().getExtras().getString("csHeader_logo");
getTabHost().setOnTabChangedListener(new OnTabChangeListener() {
@Override
public void onTabChanged(String tabId)
{
if (getTabHost().getCurrentTabTag().equals("tab_emergency"))
{
UpdateList();
if(csSavedDealerID == null)
showMessage("To benefit from the full features of this app please fill in your profile.");
else
showCutomMessage("Would you like to call for emergency assistance");
emergency = true;
mTabHost.setCurrentTab(tabClick);
}
else if (emergency == true)
{
emergency = false;
}
else if (getTabHost().getCurrentTabTag().equals("tab_home"))
{
finish();
}
tabClick = getTabHost().getCurrentTab();
if(tabClick == 0) {
// title.setTextColor(Color.RED);
title.setTextColor(Color.parseColor("#a30000"));
}else{
title.setTextColor(Color.WHITE);
}
if(tabClick == 1) {
title1.setTextColor(Color.parseColor("#a30000"));
}else{
title1.setTextColor(Color.WHITE);
}
if(tabClick == 2) {
title2.setTextColor(Color.parseColor("#a30000"));
}else{
title2.setTextColor(Color.WHITE);
}
if(tabClick == 3) {
title3.setTextColor(Color.parseColor("#a30000"));
}else{
title3.setTextColor(Color.WHITE);
}
}
});
}
public void createUsedVehicleTab(TabHost mTabHost)
{
// Create Intent for My Info
csMakeID=getIntent().getExtras().getString("csMakeID");
csHeader_logo=getIntent().getExtras().getString("csHeader_logo");
String csMakeName=getIntent().getExtras().getString("csMakeName");
Intent intent_settings = new Intent(Used_vehicle_tabbarnew.this,Used_vehicle_group_actvitynew.class);
//intent_settings.putExtras(CarData);
intent_settings.putExtra("csMakeID",csMakeID);
intent_settings.putExtra("csMakeName",csMakeName);
intent_settings.putExtra("csHeader_logo", csHeader_logo);
intent_settings.putExtra("bCarShop", getIntent().getExtras().getBoolean("bCarShop", false));
intent_settings.putExtra("vehicle_type", getIntent().getExtras().getString("vehicle_type"));
TabHost.TabSpec spec = mTabHost.newTabSpec("tab_used_home");
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_layout, getTabWidget(), false);
title = (TextView) tabIndicator.findViewById(R.id.tab_title);
title.setText("Home");
title.setTextColor(Color.parseColor("#a30000"));
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(R.drawable.tab_home);
spec.setIndicator(tabIndicator);
spec.setContent(intent_settings);
mTabHost.addTab(spec);
int height = mTabHost.getTabWidget().getChildAt(0).getLayoutParams().height;
//Log.e("CMH", "tab Hight " + height);
}
public void createFinanceTab(TabHost mTabHost)
{
// Create Intent for My Info
Intent intent_settings = new Intent(Used_vehicle_tabbarnew.this,
Finance.class);
intent_settings.putExtra("csHeader_logo", csHeader_logo);
intent_settings.putExtra("bCarShop", getIntent().getExtras().getBoolean("bCarShop", false));
// mTabHost.addTab(mTabHost.newTabSpec("tab_my_info").setIndicator(language.txt_myinfo[language.language], getResources().getDrawable(R.drawable.tab_my_info)).setContent(intent_my_info));
TabHost.TabSpec spec = mTabHost.newTabSpec("tab_finance");
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_layout, getTabWidget(), false);
title1 = (TextView) tabIndicator.findViewById(R.id.tab_title);
title1.setText("Finance");
title1.setTextColor(Color.parseColor("#ffffff"));
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(R.drawable.tab_finance);
spec.setIndicator(tabIndicator);
spec.setContent(intent_settings);
mTabHost.addTab(spec);
}
public void createFavouritesTab(TabHost mTabHost)
{
// Create Intent for My Info
Intent intent_settings = new Intent(Used_vehicle_tabbarnew.this,
Favourities.class);
intent_settings.putExtra("bCarShop", true);
intent_settings.putExtra("csHeader_logo", csHeader_logo);
intent_settings.putExtra("Previous_Activity", "More_group_activity");
// mTabHost.addTab(mTabHost.newTabSpec("tab_my_info").setIndicator(language.txt_myinfo[language.language], getResources().getDrawable(R.drawable.tab_my_info)).setContent(intent_my_info));
TabHost.TabSpec spec = mTabHost.newTabSpec("tab_favourites");
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_layout, getTabWidget(), false);
title2 = (TextView) tabIndicator.findViewById(R.id.tab_title);
title2.setText("My favourites");
title2.setTextColor(Color.parseColor("#ffffff"));
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(R.drawable.tab_favourites);
spec.setIndicator(tabIndicator);
spec.setContent(intent_settings);
mTabHost.addTab(spec);
}
public void createProfileTab(TabHost mTabHost)
{
// Create Intent for My Info
Intent intent_settings = new Intent(Used_vehicle_tabbarnew.this,
MyProfile.class);
intent_settings.putExtra("bCarShop", true);
intent_settings.putExtra("csHeader_logo", csHeader_logo);
intent_settings.putExtra("Previous_Activity", "More_group_activity");
// mTabHost.addTab(mTabHost.newTabSpec("tab_my_info").setIndicator(language.txt_myinfo[language.language], getResources().getDrawable(R.drawable.tab_my_info)).setContent(intent_my_info));
TabHost.TabSpec spec = mTabHost.newTabSpec("tab_profile");
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_layout, getTabWidget(), false);
title3 = (TextView) tabIndicator.findViewById(R.id.tab_title);
title3.setText("My profile");
title3.setTextColor(Color.parseColor("#ffffff"));
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(R.drawable.tab_profile);
spec.setIndicator(tabIndicator);
spec.setContent(intent_settings);
mTabHost.addTab(spec);
}
public void showCutomMessage(String message)
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(message).setCancelable(true).setPositiveButton(
"Yes", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int id)
{
dialog.cancel();
if(csEmergencyNumber.length() <= 0 && emergencyNumberList.size() <= 0)
{
showMessage("No Emergency Number found.");
}
else if (csEmergencyNumber.length() > 0)
{
String url = "tel:" + csEmergencyNumber;
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url));
startActivity(intent);
}
else
{
if (emergencyNumberList.size() == 1)
{
String url = "tel:" + emergencyNumberList.get(0);
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url));
startActivity(intent);
}
else
{
showEmergencyNumberDialog();
}
}
}
}).setNegativeButton(
"No", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int id)
{
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.setMessage(message);
alert.show();
}
public void UpdateList()
{
try
{
emergencyNumberList.clear();
jsonNumberArray = new JSONArray(DealerEmergencyNumbers.toString());
SharedPreferences app_preferences = PreferenceManager.getDefaultSharedPreferences(Used_vehicle_tabbarnew.this);
csSavedDealerID = app_preferences.getString("DealerID", null);
for(int nJasonIndex = 0; nJasonIndex < jsonNumberArray.length(); nJasonIndex++)
{
JSONObject emergencyObj =jsonNumberArray.getJSONObject(nJasonIndex);
String csNumber = emergencyObj.getString("EmergencyNumber");
String csNumber2 = emergencyObj.getString("office_hours_num");
String csMakeDealerID = emergencyObj.getString("DealerID");
if(csSavedDealerID != null && csSavedDealerID.equalsIgnoreCase(csMakeDealerID))
{
csEmergencyNumber = csNumber;
}
else
{
if(!csNumber.equals(""))
emergencyNumberList.add("After Hours: " + csNumber);
if(!csNumber2.equals(""))
emergencyNumberList.add("Office Hours: " + csNumber2);
}
}
if(emergencyNumberList.size() > 1)
{
myEmergencyAdapter =new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,emergencyNumberList);
myEmergencyAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void showMessage(String message)
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(message).setCancelable(true).setPositiveButton(
"OK", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int id)
{
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.setMessage(message);
alert.show();
}
void showEmergencyNumberDialog()
{
ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_spinner_dropdown_item, emergencyNumberList);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("");
builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item)
{
if (item >= 0)
{
String emergencyNumber = emergencyNumberList.get(item);
String[] parts = emergencyNumber.split(": ");
String number = parts[1]; // 034556
String url = "tel:" + number;
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(url));
startActivity(intent);
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
【问题讨论】：
标签： android android-tabhost android-tabs android-tabactivity