android-2.2-froyo

问题 I am writing an android app that stores a lot of media files. They are not the type (and are far too many) to clutter up the users notification or other media directories, but they also must be user-updatable, so I can't put them in the resources. I can use getExternalFilesDir to get a path on the sdcard, but I only want to do that if the app itself is installed on the sdcard. If the app is installed internally, I want to put the media in the internal memory. So how can I determine if my app

问题 I have following ContentObserver implementation for receiving and writing SMS, but it is called multiple times. Code: public class SMSObserverActivity extends Activity { protected MyContentObserver observer = null; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.main); String url = "content://mms-sms/"; Uri uri = Uri.parse(url); observer = new MyContentObserver(new Handler(

问题 I have 3 AsyncTasks and 1 ProgressBar . I want when any of task executes, the progress bar is visible and when all of them finish, the progress bar is invisible. In Java, there is ExecutorService::isTerminated to check if all runnables finished but Android doesn't have it. Update: 3 tasks execute at the same time. Figure. 回答1: Nice graphic. But I am afraid there is no build in mechanism for this. You'll have to implement it by yourself. There are few solutions you could use - Keep a reference

问题 At the moment I am searching for an easy and supported way of adding contacts in Android up from SDK level 7. (when some kind of data like the phone number is available) I looked at the default contact application and found "Intent.ACTION_INSERT_OR_EDIT" which is used for adding a new contact (or adding a number to a contact from the contact provider) from the dialer screen with the mime type "vnd.android.cursor.item/person". Now it would be nice to know how to find some documentation about

问题 I am new to Android development. I have created a main Activity (->A), which has 4 buttons. One of the 4 buttons is the EXIT-button. I start another activity (->B), on click of the EXIT-button. This opens 'B'Activity via an intent from 'A'Activity. Activity 'B' contains - Do you want to exit? Yes-Button & No-Button. If I give finish(), onclick of the button - it exits the 'B'Activity. I want to finish 'B' & 'A'. I have even tried A.finish() -> this doesn't get recognized and results in syntax

问题 excuse me if this question is obvious, but I am new to android sdk. What I am trying to do is get a list of contacts that have real telephone numbers to send an sms message. I am deploying directly to my phone and trying to use just the contacts listed on my phone, but I am getting too many weird contacts. I would expect that when I call the startActivityForResult() method it will give me a list of phone contacts. What it seems to do is give me a list of all potential contacts and that seems

问题 I was writing an Android app for Android SDK 2.3.3 but then I was asked to test it on a device running Android 2.2.1. So I set my target to 8 instead of 10. But then java.util.concurrent.TimeUnit only had the Java 1.5 feature set instead of the Java 1.6/1.7 feature set of java.util.concurrent.TimeUnit. So I put the openjdk 6 implementation of TimeUnit into my package for my Android app and everything works fine. Does anyone know where I can get some documentation that gives me a chart that

问题 I was writing an Android app for Android SDK 2.3.3 but then I was asked to test it on a device running Android 2.2.1. So I set my target to 8 instead of 10. But then java.util.concurrent.TimeUnit only had the Java 1.5 feature set instead of the Java 1.6/1.7 feature set of java.util.concurrent.TimeUnit. So I put the openjdk 6 implementation of TimeUnit into my package for my Android app and everything works fine. Does anyone know where I can get some documentation that gives me a chart that

问题 Some Android 2.x tablets such as the HTC Flyer and Samsung Galaxy Tab support both internal tablet storage and an external SD card. For example on my Flyer, /sdcard and /sdcard2 are separate, with the former representing the tablet's "internal storage." If I use Environment.getExternalStorageDirectory() , there doesn't seem to be any set rule on which of those storage locations will be returned. In using getExternalStorageDirectory() , my concern is that I'll only find media stored on one of

问题 I have a fairly simple game that works perfectly on every version now up through 2.1, but with the new 2.2 (Froyo) release I am unable to create a socket. I am using the mina package for nio, and get this exception: W/System.err( 263): java.net.SocketException: Bad address family W/System.err( 263): at org.apache.harmony.luni.platform.OSNetworkSystem.connectStreamWithTimeoutSocketImpl(Native Method) W/System.err( 263): at org.apache.harmony.luni.platform.OSNetworkSystem.connect