2014/10/16 上午 08:09:26
android Programming Glossary: activitiesRemoving an activity from the history stack http://stackoverflow.com/questions/1898886/removing-an-activity-from-the-history-stack fill in this info ActivityGameMain main game screen so the activities launch each other in exactly that order when the user clicks..
Android: Override back button to act like home button http://stackoverflow.com/questions/2000102/android-override-back-button-to-act-like-home-button destroyed state. In the Android docs it states ...not all activities have the behavior that they are destroyed when BACK is pressed...
Close application and launch home screen on Android http://stackoverflow.com/questions/2042222/close-application-and-launch-home-screen-on-android and launch home screen on Android I have two different activities. The first launches the second one. In the second activity I..
How do I pass data between activities in Android? http://stackoverflow.com/questions/2091465/how-do-i-pass-data-between-activities-in-android do I pass data between activities in Android I have a scenario where after logging in through.. anyone guide me on how to keep session id available to all activities Alternatively are there any other solutions to this problem..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application forget to handle the HOME key for any menus and in the activities that are started by the menus. The same goes for the SEARCH.. that can be extended to handle the HOME key for all activities that extend it package android.example @author Danny Remington..
How to get a list of installed android applications and pick one to run http://stackoverflow.com/questions/2695746/how-to-get-a-list-of-installed-android-applications-and-pick-one-to-run this question Following is the code to get the list of activities applications installed on Android final Intent mainIntent new..
Open another application from your own (intent) http://stackoverflow.com/questions/2780102/open-another-application-from-your-own-intent An application technically a process can have multiple activities services content providers and or broadcast listeners. If at..
What is the simplest and most robust way to get the user's current location in Android? http://stackoverflow.com/questions/3145089/what-is-the-simplest-and-most-robust-way-to-get-the-users-current-location-in-a that but I have to duplicate the same code in multiple activities to satisfy #2. I've tried using getBestProvider in the past..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background background By background I mean none of the applications activities are currently visible to the user Any help will be appreciated..
Background task, progress dialog, orientation change - is there any 100% working solution? http://stackoverflow.com/questions/3821423/background-task-progress-dialog-orientation-change-is-there-any-100-working should go on regardless of what the user does in terms of activities e.g. downloading a large file . You can use an ordered broadcast..
How to support Arabic text in Android? http://stackoverflow.com/questions/7962704/how-to-support-arabic-text-in-android Arabic or Farsi text to a good form for showing in your activities. import android.content.Context import android.graphics.Typeface..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for The Android OS uses a priority queue to assist in managing activities running on the device. Based on the state a particular Android.. within the OS. This priority system helps Android identify activities that are no longer in use allowing the OS to reclaim memory.. activity the activity is considered paused. Paused activities are still alive that is they maintain all state and member information..
Example of code to implement a PDF reader http://stackoverflow.com/questions/11152956/example-of-code-to-implement-a-pdf-reader
ADT 22.2 New App Wizard: Unsupported template dependency: Upgrade your Android Eclipse plugin http://stackoverflow.com/questions/18839428/adt-22-2-new-app-wizard-unsupported-template-dependency-upgrade-your-android-e master branch. I've attached a snapshot of the current Activities templates. Replacing your sdk tools templates activities folder..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android 7456 17916 Objects Views 149 ViewRoots 4 AppContexts 13 Activities 0 Assets 4 AssetManagers 4 Local Binders 141 Proxy Binders 158..
Android Webview - Completely Clear the Cache http://stackoverflow.com/questions/2465432/android-webview-completely-clear-the-cache Completely Clear the Cache I have a WebView in one of my Activities and when it loads a webpage the page gathers some background..
How to change current Theme at runtime in Android http://stackoverflow.com/questions/2482848/how-to-change-current-theme-at-runtime-in-android point in the code My application consists of several Activities if that helps. android themes share improve this question..
Android - Switch Tabs from within an Activity within a tab http://stackoverflow.com/questions/2541802/android-switch-tabs-from-within-an-activity-within-a-tab because they can be separated into there own XML file. Activities can also be organized into there own Java file instead of being..
Converting a view to Bitmap without displaying it in Android? http://stackoverflow.com/questions/2801116/converting-a-view-to-bitmap-without-displaying-it-in-android HomeScreen and it calls Activity A B C and none of the Activities from A B C are displayed. It just gives the Bitmap of that screen..
http://stackoverflow.com/questions/2925054/mvc-pattern-in-android in Java for Android Or is it already implemented through Activities Or is there a better way to implement the MVC pattern for Android..
Passing data between activities in Android http://stackoverflow.com/questions/2965109/passing-data-between-activities-in-android definitive FAQ item about how to pass data between between Activities Services within a single application . share improve this answer..
http://stackoverflow.com/questions/3007998/on-logout-clear-activity-history-stack-preventing-back-button-from-opening-l you need to brodcast a logout message to all your Activities need to stay under a logged in status. So you can use the sendBroadcast..
Android: TabHost without TabActivity http://stackoverflow.com/questions/3163884/android-tabhost-without-tabactivity 411 Caused by java.lang.IllegalStateException Activities can't be added until the containing group has been created...
How to develop a soft keyboard for Android? http://stackoverflow.com/questions/3480715/how-to-develop-a-soft-keyboard-for-android and all the stuff you can do in a Service . You can open Activities and dialogs from the InputMethod . Once again it's just a Service..
What is the Android UiThread (UI thread) http://stackoverflow.com/questions/3652560/what-is-the-android-uithread-ui-thread code is run. All of your application components Activities Services ContentProviders BroadcastReceivers are created in..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background in the project you may create a common ancestor for your Activities if you'd like to but if your activity is already extended from..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget Exceeds VM Budget error. I found this error frequently on Activities using lots of bitmaps after changing orientation the Activity..
How to handle button clicks using the xml onClick within Fragments http://stackoverflow.com/questions/6091194/how-to-handle-button-clicks-using-the-xml-onclick-within-fragments With the introduction of Honeycomb I'm breaking these Activities into Fragments which can be reused inside many different Activities... into Fragments which can be reused inside many different Activities. Most of the behavior of the buttons is Activity independent..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables you are encountering is how to save state across several Activities and all parts of your application. A static variable for instance..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for be broken into 3 main groups as follows Active or Running Activities are considered active or running if they are in the foreground.. the Active Running Activity stable and responsive. Stopped Activities that are completely obscured by another activity are considered..
Removing an activity from the history stack http://stackoverflow.com/questions/1898886/removing-an-activity-from-the-history-stack sign up for an account ActivitySplashScreenSignUp great fill in this info ActivityGameMain main game screen so the activities launch each other in exactly that order when the user clicks through a button on each screen. When the user goes from activity..
Android: Override back button to act like home button http://stackoverflow.com/questions/2000102/android-override-back-button-to-act-like-home-button my application to go into the stopped state rather than the destroyed state. In the Android docs it states ...not all activities have the behavior that they are destroyed when BACK is pressed. When the user starts playing music in the Music application..
Close application and launch home screen on Android http://stackoverflow.com/questions/2042222/close-application-and-launch-home-screen-on-android application and launch home screen on Android I have two different activities. The first launches the second one. In the second activity I call System.exit 0 in order to force the application to close..
How do I pass data between activities in Android? http://stackoverflow.com/questions/2091465/how-do-i-pass-data-between-activities-in-android do I pass data between activities in Android I have a scenario where after logging in through a login page there will be sign out button on each activity... the session id of the signed in user to signout. Can anyone guide me on how to keep session id available to all activities Alternatively are there any other solutions to this problem android share improve this question The easiest way to do..
How to close Android application? http://stackoverflow.com/questions/2092951/how-to-close-android-application HOME key pressed in the onStop method of the activity. Don't forget to handle the HOME key for any menus and in the activities that are started by the menus. The same goes for the SEARCH key. Below is some example classes to illustrate Here's an example.. is killed. UIHelper.killApp true Here's an abstract activity that can be extended to handle the HOME key for all activities that extend it package android.example @author Danny Remington MacroSolve import android.app.Activity import android.view.Menu..
How to get a list of installed android applications and pick one to run http://stackoverflow.com/questions/2695746/how-to-get-a-list-of-installed-android-applications-and-pick-one-to-run to run a specific application Thanks android share improve this question Following is the code to get the list of activities applications installed on Android final Intent mainIntent new Intent Intent.ACTION_MAIN null mainIntent.addCategory Intent.CATEGORY_LAUNCHER..
Open another application from your own (intent) http://stackoverflow.com/questions/2780102/open-another-application-from-your-own-intent concept of application in Android is slightly an extended one. An application technically a process can have multiple activities services content providers and or broadcast listeners. If at least one of them is running the application is up and running..
What is the simplest and most robust way to get the user's current location in Android? http://stackoverflow.com/questions/3145089/what-is-the-simplest-and-most-robust-way-to-get-the-users-current-location-in-a providers GPS and NETWORK and manage each's lifecycle. Not only that but I have to duplicate the same code in multiple activities to satisfy #2. I've tried using getBestProvider in the past to cut the solution down to just using one location provider..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background any way in android to know if your application is running in background By background I mean none of the applications activities are currently visible to the user Any help will be appreciated android background share improve this question There..
Background task, progress dialog, orientation change - is there any 100% working solution? http://stackoverflow.com/questions/3821423/background-task-progress-dialog-orientation-change-is-there-any-100-working particularly useful if the work to be done may be long and should go on regardless of what the user does in terms of activities e.g. downloading a large file . You can use an ordered broadcast Intent to either have the activity respond to the work..
How to support Arabic text in Android? http://stackoverflow.com/questions/7962704/how-to-support-arabic-text-in-android 2 use the following class to get the font and converting your Arabic or Farsi text to a good form for showing in your activities. import android.content.Context import android.graphics.Typeface public final class Farsi public static boolean isFarsiConversionNeeded..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for called as below onPause onStop onDestroy Activity States The Android OS uses a priority queue to assist in managing activities running on the device. Based on the state a particular Android activity is in it will be assigned a certain priority within.. activity is in it will be assigned a certain priority within the OS. This priority system helps Android identify activities that are no longer in use allowing the OS to reclaim memory and resources. The following diagram illustrates the states.. visible but partially hidden by a new non full sized or transparent activity the activity is considered paused. Paused activities are still alive that is they maintain all state and member information and remain attached to the window manager. This is..
Example of code to implement a PDF reader http://stackoverflow.com/questions/11152956/example-of-code-to-implement-a-pdf-reader
ADT 22.2 New App Wizard: Unsupported template dependency: Upgrade your Android Eclipse plugin http://stackoverflow.com/questions/18839428/adt-22-2-new-app-wizard-unsupported-template-dependency-upgrade-your-android-e into this tools build. The templates have settled in the AOSP master branch. I've attached a snapshot of the current Activities templates. Replacing your sdk tools templates activities folder with the contents of this zip should resolve this issue...
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android 25783 shared dirty 2184 3596 916 6696 priv dirty 4504 5956 7456 17916 Objects Views 149 ViewRoots 4 AppContexts 13 Activities 0 Assets 4 AssetManagers 4 Local Binders 141 Proxy Binders 158 Death Recipients 49 OpenSSL Sockets 0 SQL heap 205 dbFiles..
Android Webview - Completely Clear the Cache http://stackoverflow.com/questions/2465432/android-webview-completely-clear-the-cache Webview Completely Clear the Cache I have a WebView in one of my Activities and when it loads a webpage the page gathers some background data from Facebook. What I'm seeing though is the page displayed..
How to change current Theme at runtime in Android http://stackoverflow.com/questions/2482848/how-to-change-current-theme-at-runtime-in-android happening and how to fix it Should I call setTheme at any special point in the code My application consists of several Activities if that helps. android themes share improve this question I would like to see the method too where you set once for..
Android - Switch Tabs from within an Activity within a tab http://stackoverflow.com/questions/2541802/android-switch-tabs-from-within-an-activity-within-a-tab view or activity based TabHost. Activity based tabs are great because they can be separated into there own XML file. Activities can also be organized into there own Java file instead of being cluttered into one. That being said some of the things you..
Converting a view to Bitmap without displaying it in Android? http://stackoverflow.com/questions/2801116/converting-a-view-to-bitmap-without-displaying-it-in-android just get the Bitmap of that screen. For example say I just call HomeScreen and it calls Activity A B C and none of the Activities from A B C are displayed. It just gives the Bitmap of that screen by getDrawingCache . And then we can display those bitmaps..
http://stackoverflow.com/questions/2925054/mvc-pattern-in-android Is it possible to implement the Model View Controller pattern in Java for Android Or is it already implemented through Activities Or is there a better way to implement the MVC pattern for Android java android mvc share improve this question It's..
Passing data between activities in Android http://stackoverflow.com/questions/2965109/passing-data-between-activities-in-android
http://stackoverflow.com/questions/3007998/on-logout-clear-activity-history-stack-preventing-back-button-from-opening-l I can suggest you another approach IMHO more robust. Basically you need to brodcast a logout message to all your Activities need to stay under a logged in status. So you can use the sendBroadcast and install a BroadcastReceiver in all your Actvities...
Android: TabHost without TabActivity http://stackoverflow.com/questions/3163884/android-tabhost-without-tabactivity spec The error I get is 07 02 07 11 12.715 ERROR AndroidRuntime 411 Caused by java.lang.IllegalStateException Activities can't be added until the containing group has been created. The xml for the view is xml version 1.0 encoding utf 8 TabHost..
How to develop a soft keyboard for Android? http://stackoverflow.com/questions/3480715/how-to-develop-a-soft-keyboard-for-android is basically an Android Service so yes you can do HTTP and all the stuff you can do in a Service . You can open Activities and dialogs from the InputMethod . Once again it's just a Service . I've been developing an IME so ask again if you run..
What is the Android UiThread (UI thread) http://stackoverflow.com/questions/3652560/what-is-the-android-uithread-ui-thread execution for your application. This is where most of your application code is run. All of your application components Activities Services ContentProviders BroadcastReceivers are created in this thread and any system calls to those applications are performed..
Android: Is application running in background? http://stackoverflow.com/questions/3667022/android-is-application-running-in-background @string app_name Add onPause and onResume to every Activity in the project you may create a common ancestor for your Activities if you'd like to but if your activity is already extended from MapActivity ListActivity etc. you still need to write the..
java.lang.OutOfMemoryError: bitmap size exceeds VM budget http://stackoverflow.com/questions/4611822/java-lang-outofmemoryerror-bitmap-size-exceeds-vm-budget Android Apps is the java.lang.OutOfMemoryError Bitmap Size Exceeds VM Budget error. I found this error frequently on Activities using lots of bitmaps after changing orientation the Activity is destroyed created again and the layouts are 𦤹nflated from..
How to handle button clicks using the xml onClick within Fragments http://stackoverflow.com/questions/6091194/how-to-handle-button-clicks-using-the-xml-onclick-within-fragments use view.getId and a switch statement to do the button logic. With the introduction of Honeycomb I'm breaking these Activities into Fragments which can be reused inside many different Activities. Most of the behavior of the buttons is Activity independent.. the introduction of Honeycomb I'm breaking these Activities into Fragments which can be reused inside many different Activities. Most of the behavior of the buttons is Activity independent and I would like the code to reside inside the Fragments file..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables it at your own risk. ORIGINAL ANSWER The more general problem you are encountering is how to save state across several Activities and all parts of your application. A static variable for instance a singleton is a common Java way of achieving this. I..
Android Activity Life Cycle - What are all these methods for? http://stackoverflow.com/questions/8515936/android-activity-life-cycle-what-are-all-these-methods-for activity can go through during its lifetime These states can be broken into 3 main groups as follows Active or Running Activities are considered active or running if they are in the foreground also known as the top of the activity stack. This is considered.. will satisfy the resource requirements needed to keep the Active Running Activity stable and responsive. Stopped Activities that are completely obscured by another activity are considered stopped or in the background. Stopped activities still try..
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