通過使用選項卡組acitvity,我有四個選項卡。單擊後退按鈕時出現故障,但我想要在每個選項卡中執行第一個活動時遇到問題。後退按鈕在TabGroup活動中強制關閉
這裏是我的代碼TabHome.java
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.tab);
Resources res = getResources();
tabs = getTabHost();
TabHost.TabSpec spec;
Intent intent;
// Create an Intent to launch an Activity for the tab (to be reused)
//1 -Gebrauchte Tab
intent = new Intent().setClass(this,TabBikesGroupActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabs.newTabSpec("gebrauchte").setIndicator("Gebrauchte",
res.getDrawable(R.drawable.bike))
.setContent(intent);
tabs.addTab(spec);
//2 - Produkte
intent = new Intent().setClass(this, TabProductGroupActivity.class);
spec = tabs.newTabSpec("produkte").setIndicator("Produkte",
res.getDrawable(R.drawable.t_produkt))
.setContent(intent);
tabs.addTab(spec);
//3 - Handler
intent = new Intent().setClass(this, TabDealersGroupActivity.class);
spec = tabs.newTabSpec("handler").setIndicator("Handler",
res.getDrawable(R.drawable.haendler))
.setContent(intent);
tabs.addTab(spec);
//4 - Einstellungen
intent = new Intent().setClass(this, TabSettingsGroupActivity.class);
spec = tabs.newTabSpec("einstellungen").setIndicator("Einstellungen",
res.getDrawable(R.drawable.t_settings))
.setContent(intent);
tabs.addTab(spec);
// tabHost.setCurrentTab(1);
}
public void switchToTab(int tabid){
System.out.println("CURRENT TAB "+tabid);
tabs.setCurrentTab(tabid);
}
上面的代碼describs約tabgroup活動
和 這是我的第一個選項卡DealersDetailDisplay.java
In that i'm having two button and calling the below methods.When i click on this buttons goes to (Bike search list Activity -> Image adapter -> details activity ->search list Activity -> image adapter -> details activity -> goes same like above)infinite times.Now my problem is when i click on the back button then needs to move activity up to first Bike search list Activity.
這是我的兩個按鈕動作聽衆.....
btnAllBikeDetail.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
getBikeSearchForDealer(dealerId);
}
});
btnAllProductDetail.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
getProductSearchForDealer();
}
});
以下兩種方法是從特定網址獲取數據並在另一個活動中列出。之後,如果我選擇特定列表項目,然後移動到另一個活動(即圖像適配器),然後再次單擊它移動到另一個活動再次,你得到上面的兩個按鈕(相同的動作)這將去喜歡這個汽車無...
protected void getBikeSearchForDealer(String dealerId) {
// TODO Auto-generated method stub
try {
URL url = URLComposer.getMotorCycleListUsedByDealerURL(dealerId);
System.out.println("URL " + url.toString());
Intent intent=new Intent(getParent(),BikesList.class);
intent.putExtra("Search_Result",url.toString());
TabGroupActivity parentActivity =(TabGroupActivity) getParent();
parentActivity.startChildActivity("BikeSearch", intent);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
protected void getProductSearchForDealer() {
// TODO Auto-generated method stub
try {
URL url = URLComposer.getDealersProductListURL(dealerId);
System.out.println("URL " + url.toString());
Intent intent = new Intent(getParent(), ProductList.class);
TabGroupActivity parentActivity = (TabGroupActivity) getParent();
intent.putExtra("Dealer_Search_Result", url.toString());
parentActivity.startChildActivity("productList",
intent);
System.out.println("URL " + url.toString());
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Logcat result is
03-17 14:37:59.760: I/System.out(585): Gallery position :http://www.1000ps.at//images/gebrauchtmotorrad/g_G625147_2.jpg
03-17 14:37:59.900: D/dalvikvm(585): GC_FOR_MALLOC freed 12364 objects/869712 bytes in 132ms
03-17 14:37:59.931: D/webviewglue(585): nativeDestroy view: 0x3d60c0
03-17 14:37:59.940: D/webviewglue(585): nativeDestroy view: 0x354ac8
03-17 14:38:03.620: I/System.out(585): Gallery position :http://www.1000ps.at//images/gebrauchtmotorrad/g_G625147_3.jpg
03-17 14:38:06.151: I/System.out(585): Gallery position :http://www.1000ps.at//images/gebrauchtmotorrad/g_G625147_3.jpg
03-17 14:38:06.301: D/dalvikvm(585): GC_EXTERNAL_ALLOC freed 4806 objects/406080 bytes in 147ms
03-17 14:38:06.320: D/webviewglue(585): nativeDestroy view: 0x35c568
03-17 14:38:06.361: D/skia(585): --- decoder->decode returned false
03-17 14:38:08.303: I/System.out(585): Gallery position :http://www.1000ps.at//images/gebrauchtmotorrad/g_G625147_3.jpg
03-17 14:38:12.480: I/System.out(585): Gallery position :http://www.1000ps.at//images/gebrauchtmotorrad/g_G625147_2.jpg
03-17 14:38:23.981: I/System.out(585): hasUsedBikesnull
03-17 14:38:23.981: I/System.out(585): hasUsedProductsnull
03-17 14:38:24.081: I/System.out(585): hsdjka265204
03-17 14:38:26.191: I/System.out(585): bikeOrder bikeID265204
03-17 14:38:26.191: I/System.out(585): bikeOrder bikeId:265204
03-17 14:38:26.191: I/System.out(585): XML Valueshttp://iphone.1000ps.at/iphone-xml/gebrauchte_suche_result.ashx?suchen_member=265204
03-17 14:38:26.191: I/System.out(585): URL http://iphone.1000ps.at/iphone-xml/gebrauchte_suche_result.ashx?suchen_member=265204
03-17 14:38:26.241: I/System.out(585): Override const
03-17 14:38:26.860: I/System.out(585): Hitting the webservice
03-17 14:38:26.860: I/System.out(585): DOM :[email protected]
03-17 14:38:26.860: I/root node of document(585): BikeResults
03-17 14:38:26.860: I/System.out(585): welcome
03-17 14:38:26.860: I/System.out(585): welcome
03-17 14:38:26.860: I/System.out(585): welcome
03-17 14:38:26.870: I/System.out(585): welcome
03-17 14:38:26.870: I/System.out(585): welcome
03-17 14:38:26.880: I/System.out(585): bikeItemListSize5
03-17 14:38:27.001: I/System.out(585): Pending View
03-17 14:38:27.011: I/System.out(585): Override const
03-17 14:38:27.550: I/System.out(585): Hitting the webservice
03-17 14:38:27.680: I/System.out(585): DOM :[email protected]
03-17 14:38:27.690: I/root node of document(585): BikeResults
03-17 14:38:29.070: I/System.out(585): Override const
03-17 14:38:29.070: I/System.out(585): XML Valueshttp://iphone.1000ps.at/iphone-xml/gebrauchte_detail.ashx?gid=559645
03-17 14:38:29.640: I/System.out(585): Hitting the webservice
03-17 14:38:29.640: I/System.out(585): DOM :[email protected]
03-17 14:38:29.640: I/root node of document(585): document
03-17 14:38:29.670: I/System.out(585): BikeDataSerive, biekId: 559645
03-17 14:38:29.680: I/node list name(585): [email protected]
03-17 14:38:29.680: I/node values(585): 1
03-17 14:38:29.680: I/node list name(585): [email protected]
03-17 14:38:29.680: I/node values(585): 1
03-17 14:38:29.680: I/System.out(585): Thumbnail images http://www.1000ps.at//images/gebrauchtmotorrad/g_559645.jpg
03-17 14:38:29.680: I/System.out(585): Thumbnail images http://www.1000ps.at//images/gebrauchtmotorrad/g_559645_2.jpg
03-17 14:38:29.680: I/System.out(585): Thumbnail images http://www.1000ps.at//images/gebrauchtmotorrad/g_559645_3.jpg
03-17 14:38:29.690: I/System.out(585): Thumbnail images http://www.1000ps.at//images/gebrauchtmotorrad/g_559645_4.jpg
03-17 14:38:29.690: I/System.out(585): Original images http://www.1000ps.at//images/gebrauchtmotorrad/g_G559645.jpg
03-17 14:38:29.690: I/System.out(585): Original images http://www.1000ps.at//images/gebrauchtmotorrad/g_G559645_2.jpg
03-17 14:38:29.690: I/System.out(585): Original images http://www.1000ps.at//images/gebrauchtmotorrad/g_G559645_3.jpg
03-17 14:38:29.690: I/System.out(585): Original images http://www.1000ps.at//images/gebrauchtmotorrad/g_G559645_4.jpg
03-17 14:38:29.690: I/node list name(585): [email protected]
03-17 14:38:29.690: I/node values(585): 1
03-17 14:38:29.710: I/System.out(585): BikeDataService email:[email protected]
03-17 14:38:29.710: I/System.out(585): kraft: null
03-17 14:38:33.321: I/System.out(585): Activity Being closeActivities.BikeDetailsDisplay
03-17 14:38:33.321: I/System.out(585): Destroy called
03-17 14:38:34.460: I/System.out(585): Activity Being closeActivities.BikesList
03-17 14:38:34.460: I/System.out(585): Destroy called
03-17 14:38:35.261: I/System.out(585): Activity Being closeActivities.BikeOrder
03-17 14:38:35.261: I/System.out(585): Destroy called
03-17 14:38:35.261: W/System.err(585): java.lang.NullPointerException
03-17 14:38:35.271: W/System.err(585): at com.InternetGMBH.ThousandPS.Activities.TabGroupActivity.finishFromChild(TabGroupActivity.java:54)
03-17 14:38:35.271: W/System.err(585): at android.app.Activity.finish(Activity.java:3249)
03-17 14:38:35.271: W/System.err(585): at com.InternetGMBH.ThousandPS.Activities.TabGroupActivity.onBackPressed(TabGroupActivity.java:108)
03-17 14:38:35.271: W/System.err(585): at com.InternetGMBH.ThousandPS.Activities.BikeOrder$1.onClick(BikeOrder.java:134)
03-17 14:38:35.271: W/System.err(585): at android.view.View.performClick(View.java:2408)
03-17 14:38:35.281: W/System.err(585): at android.view.View$PerformClick.run(View.java:8816)
03-17 14:38:35.281: W/System.err(585): at android.os.Handler.handleCallback(Handler.java:587)
03-17 14:38:35.281: W/System.err(585): at android.os.Handler.dispatchMessage(Handler.java:92)
03-17 14:38:35.281: W/System.err(585): at android.os.Looper.loop(Looper.java:123)
03-17 14:38:35.281: W/System.err(585): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-17 14:38:35.281: W/System.err(585): at java.lang.reflect.Method.invokeNative(Native Method)
03-17 14:38:35.281: W/System.err(585): at java.lang.reflect.Method.invoke(Method.java:521)
03-17 14:38:35.281: W/System.err(585): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-17 14:38:35.281: W/System.err(585): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-17 14:38:35.281: W/System.err(585): at dalvik.system.NativeStart.main(Native Method)
03-17 14:39:07.670: I/System.out(585): bikeOrder bikeID265204
03-17 14:39:07.670: I/System.out(585): bikeOrder bikeId:265204
03-17 14:39:07.670: I/System.out(585): XML Valueshttp://iphone.1000ps.at/iphone-xml/gebrauchte_suche_result.ashx?suchen_member=265204
03-17 14:39:07.670: I/System.out(585): URL http://iphone.1000ps.at/iphone-xml/gebrauchte_suche_result.ashx?suchen_member=265204
03-17 14:39:07.730: I/System.out(585): Override const
03-17 14:39:09.020: I/System.out(585): Hitting the webservice
03-17 14:39:09.020: I/System.out(585): DOM :[email protected]
03-17 14:39:09.020: I/root node of document(585): BikeResults
03-17 14:39:09.051: I/System.out(585): welcome
03-17 14:39:09.051: I/System.out(585): welcome
03-17 14:39:09.051: I/System.out(585): welcome
03-17 14:39:09.051: I/System.out(585): welcome
03-17 14:39:09.081: I/System.out(585): welcome
03-17 14:39:09.110: I/System.out(585): bikeItemListSize5
03-17 14:39:09.231: I/System.out(585): Pending View
03-17 14:39:09.231: I/System.out(585): Override const
03-17 14:39:10.520: I/System.out(585): Hitting the webservice
03-17 14:39:10.720: I/System.out(585): DOM :[email protected]
03-17 14:39:10.740: I/root node of document(585): BikeResults
03-17 14:39:20.171: I/System.out(585): Activity Being closeActivities.BikesList
03-17 14:39:20.171: I/System.out(585): Destroy called
03-17 14:39:20.171: D/AndroidRuntime(585): Shutting down VM
03-17 14:39:20.171: W/dalvikvm(585): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
03-17 14:39:20.201: E/AndroidRuntime(585): FATAL EXCEPTION: main
03-17 14:39:20.201: E/AndroidRuntime(585): java.lang.NullPointerException
03-17 14:39:20.201: E/AndroidRuntime(585): at com.InternetGMBH.ThousandPS.Activities.TabGroupActivity.finishFromChild(TabGroupActivity.java:54)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.app.Activity.finish(Activity.java:3249)
03-17 14:39:20.201: E/AndroidRuntime(585): at com.InternetGMBH.ThousandPS.Activities.TabGroupActivity.onBackPressed(TabGroupActivity.java:108)
03-17 14:39:20.201: E/AndroidRuntime(585): at com.InternetGMBH.ThousandPS.Activities.BikesList$1.onClick(BikesList.java:67)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.view.View.performClick(View.java:2408)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.view.View$PerformClick.run(View.java:8816)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.os.Handler.handleCallback(Handler.java:587)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.os.Handler.dispatchMessage(Handler.java:92)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.os.Looper.loop(Looper.java:123)
03-17 14:39:20.201: E/AndroidRuntime(585): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-17 14:39:20.201: E/AndroidRuntime(585): at java.lang.reflect.Method.invokeNative(Native Method)
03-17 14:39:20.201: E/AndroidRuntime(585): at java.lang.reflect.Method.invoke(Method.java:521)
03-17 14:39:20.201: E/AndroidRuntime(585): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-17 14:39:20.201: E/AndroidRuntime(585): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-17 14:39:20.201: E/AndroidRuntime(585): at dalvik.system.NativeStart.main(Native Method)
03-17 14:40:25.580: I/Process(585): Sending signal. PID: 585 SIG: 9
i have addressed only one cycle of activity is working...after that i am getting force close...
only one time only the back button is working after that i am getting force close this is my logcat 03-17 14:59:42.431: I/System.out(640): Activity Being closeActivities.BikeOrder
03-17 14:59:42.431: I/System.out(640): Destroy called
03-17 14:59:43.180: I/System.out(640): Activity Being closeActivities.BikeDetailsDisplay
03-17 14:59:43.180: I/System.out(640): Destroy called
03-17 14:59:44.360: I/System.out(640): Activity Being closeActivities.BikesList
03-17 14:59:44.360: I/System.out(640): Destroy called
03-17 14:59:44.390: D/AndroidRuntime(640): Shutting down VM
03-17 14:59:44.390: W/dalvikvm(640): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
03-17 14:59:44.400: E/AndroidRuntime(640): FATAL EXCEPTION: main
03-17 14:59:44.400: E/AndroidRuntime(640): java.lang.NullPointerException
03-17 14:59:44.400: E/AndroidRuntime(640): at com.InternetGMBH.ThousandPS.Activities.TabGroupActivity.finishFromChild(TabGroupActivity.java:54)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.app.Activity.finish(Activity.java:3249)
03-17 14:59:44.400: E/AndroidRuntime(640): at com.InternetGMBH.ThousandPS.Activities.TabGroupActivity.onBackPressed(TabGroupActivity.java:108)
03-17 14:59:44.400: E/AndroidRuntime(640): at com.InternetGMBH.ThousandPS.Activities.BikesList$1.onClick(BikesList.java:67)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.view.View.performClick(View.java:2408)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.view.View$PerformClick.run(View.java:8816)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.os.Handler.handleCallback(Handler.java:587)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.os.Handler.dispatchMessage(Handler.java:92)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.os.Looper.loop(Looper.java:123)
03-17 14:59:44.400: E/AndroidRuntime(640): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-17 14:59:44.400: E/AndroidRuntime(640): at java.lang.reflect.Method.invokeNative(Native Method)
03-17 14:59:44.400: E/AndroidRuntime(640): at java.lang.reflect.Method.invoke(Method.java:521)
03-17 14:59:44.400: E/AndroidRuntime(640): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-17 14:59:44.400: E/AndroidRuntime(640): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-17 14:59:44.400: E/AndroidRuntime(640): at dalvik.system.NativeStart.main(Native Method)
03-17 14:59:47.831: I/Process(640): Sending signal. PID: 640 SIG: 9
添加的logcat找出在碰撞發生。 – PravinCG 2012-03-17 06:49:11