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问题 This is the code I have so far that gathers the strength value, but when I try to print it in the main activity the emulator does not open the app. How would I fix this? My emulator is in API 29. On the emulator, it simply opens and then goes back to the home screen. I am also unsure of what to declare context to in the main. I currently have it set to null. My goal is to get the cellular signal strength from a cell phone and have this update multiple times every second within an app that I

问题 Long story short, how can I disable the screen transitions between activities? We implemented our own tab handler if you will, and now it is doing a transition between tabs, which looks pretty tacky. Thanks! Chris. 回答1: The Spare Parts app you find in the emulator, on self-built images and (i suppose) in the source tree let's you turn on/off those transitions(globally!). You may want to take a look at its source to get a clue how this works. 回答2: See android.content.Intent.FLAG_ACTIVITY_NO

问题 Well this is the code I use to animate the view so that old image disappears (black background) and new one slides in from outside (from left to right). this.imgView.setAnimation(AnimationUtils.loadAnimation(this, R.anim.slide_right)); this.imgView.setImageResource(imageArray[next]); How do I make it that old image slides out of the screen before new one shows up. Would be great if both were visible but I guess that would require 2 views to switch, so for now I could stick to one on screen at

问题 Inside my Configuration activity i need to create a preference screen with a fixed View at the top showing a preview of content configured in the page. I don't want to change the main preference screen (i have already a separate activity for that) i want a different layout for a "nested" preferencescreen. What i've tried is specifying an Intent inside the preference screen however when i click on this options nothing happens and activity goes into timeout... Activity is correctly configured

问题 what will be the easiest way to change the resolution on Ec2 Windows server? I am running Windows 8 R2 Any idea appreciated...:) 回答1: That setting comes from your client. If you are connecting over remote desktop, go to the display tab and then set the 'display configuration' to the value you want. You many seed to select the 'show options' link first if your are opening your connection from the mstsc command. 回答2: If you need to change the actual resolution on the computer itself (if you for

问题 Google suggests to create for each image 4 different versions - one for each density (ldpi, mdpi, hdpi, xhdpi). Sometimes you might even want to create others, based on the screen size (small, normal, large, xlarge). This causes a weird situation where most of the app's images will never be used by the app, right? How come Google doesn't create multiple APKs on their website, to target the best APK to the end user's device, so that 100% of the resources will be targeted on the device's specs?

问题 Google suggests to create for each image 4 different versions - one for each density (ldpi, mdpi, hdpi, xhdpi). Sometimes you might even want to create others, based on the screen size (small, normal, large, xlarge). This causes a weird situation where most of the app's images will never be used by the app, right? How come Google doesn't create multiple APKs on their website, to target the best APK to the end user's device, so that 100% of the resources will be targeted on the device's specs?

问题 I'm using the following code to get the screen size width: CGFloat width = [UIScreen mainScreen].bounds.size.width - 100; But its giving width as "668.0" in portrait as well as landscape. How can I get different width depending on the orientation of the device. 回答1: I ran into the same problem as you and all I could find is checking the orientation and calculate the height and width as follow: UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];

问题 I have web application which follows responsive web design techniques. I'd like to serve different (bigger) font size for TV and different (smaller) for screen even when both have the same resolution. Why? Because when user uses 32" monitor as screen, he probably sits closer to it than user who uses it as TV. The code: body {font-size:14px;} @media (min-width:1900px) {body {font-size:20px;}} @media tv and (min-width:1900px) {body {font-size:30px;}} should do all the work (if I understand how

问题 I am working on an app for Android, for which I would like to know whether or not Auto-Rotate is enabled. Does anybody know how I can get this? So just for clarity: I only need to know whether or not a user has Auto-Rotate enabled in their settings or not. 回答1: You can Get Auto-Rotate Information On/Off Using Settings.System.ACCELEROMETER_ROTATION as : if (android.provider.Settings.System.getInt(getContentResolver(),Settings.System.ACCELEROMETER_ROTATION, 0) == 1){ Toast.makeText(Rotation