android-2.2-froyo

问题 Can i use Fragments in 2.2 version of the Android (Froyo) using the compatibility package ? I want to use two nested Tabs which on clicking should display related content in the Fragments. 回答1: Have a look at ActionbarSherlock. Short description from their website: ActionBarSherlock is an extension of the compatibility library designed to facilitate the use of the action bar design pattern across all versions of Android with a single API. With one API you can use all that 3.0 stuff on pre-3.0

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: Intent to launch the clock application on android I have a widget that displays the time and if one taps on it, it launches the com.android.alarmclock/.AlarmClock activity with an PendingIntent . This works great before-Froyo, but with Froyo, I have to launch the com.android.deskclock/.AlarmClock. So I want to put in code that checks for the class existence and launch the appropriate activity/intent. Here is

问题 For some reason, I can't get text to show up in my list view. When I run the following example, two blank list elements appear with no text. Also, the debugging output shows that the value of the text in the TextView is correct. Here is my main activity: import java.util.ArrayList; import android.app.ListActivity; import android.content.Context; import android.os.Bundle; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup;

问题 I am working on QuickContactBadge. What I want to do is to show my app icon in the QuickContactBadge like facebook or gmail, and when the user press on the icon it will launch my application a selected activity. And when the the activity is launch i want to get the phone number which user selected. Currently my application is showing QuickContactBadge and the badge also launch the main activity in the application but i am not able to get the phone number form which user launch the application

问题 Can anyone help me on this one? I want to do image manipulation in my Android app like Brightness and Contrast. Any ideas ? 回答1: I previously posted an example of how to greyscale an image in android. This code could be used as a starting point for basic image manipulation. I also suggest you check out the ColorMatrix class 来源： https://stackoverflow.com/questions/5962032/image-manipulation-in-android-app

问题 I'm building an app which will run from Android version 2.2 (Froyo) onwards. I have already built an app with 2.2 for playing videos and in the same app I want to run on Android version 3 (Honeycomb). And here my problem starts with hardware_ accelerated flag. This flag is available from Honeycomb 3 onwards, but not below Honeycomb. I want to ship one common app with Froyo, but as I'm trying my app in Honeycomb, video is not shown. It's clearly because of the hardware_ accelerated flag. I can

问题 I've gotten the front-facing camera to work on a Samsung Galaxy S, but the following technique doesn't work on an LG Optimus 2X Speed: Camera mCamera = Camera.open(); Camera.Parameters parameters = mCamera.getParameters(); parameters.set("camera-id", 2); mCamera.setParameters(parameters); The above code still only displays video from the back-facing camera. The Camera app supports switching cameras, and it even comes bundled with a "Mirror" app. 回答1: I revealed all the parameters using Camera

问题 I want a ListView which displays name and info about each item using simple_list_item_2 , so it looks something like this: SWITZERLAND a country with many delicious cheeses BRITAIN famous for its clocktower AUSTRALIA in Australia, everything is upside down! The text in caps is meant to represent the large black text in each ListView element and the lower caps text represents the grey, small type of that element. However, I want the user to be able to add his own countries, so the first

问题 My application makes use of the support package to implement Fragment s on 2.2 upwards. I have a View subclass (let's call it ZoomableView ) that makes use of ScaleGestureDetector to detect pinch scaling events. This is done in the familiar way; that is, within onTouchEvent() , the MotionEvent s are passed to the detector using mScaleDetector.onTouchEvent(event) . A SimpleOnScaleGestureListener is used to receive the scale events. This ZoomableView class is always displayed as the sole View

问题 In my android App I am converting a string to a date using the following method public Date convertToDate(String date) { //(input date format "Feb 18, 2013 01:32 AM") DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.SHORT); try { Date dateObj = dateFormat.parse(date); return dateObj; } catch (ParseException e) { e.printStackTrace(); } catch (Exception e) { Log.d("Utility", e.getMessage()); } return null; } It works fine in most of the mobile but for some