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TaifunWiFi 拓展：WiFi Manager WiFi管理器扩展 · App Inventor 2 中文网
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基本WiFi状态检查
// 检查WiFi状态
when Screen1.Initialize
do
if WiFi1.IsEnabled then
set Label1.Text to "WiFi已启用"
set Label2.Text to "当前IP: " & WiFi1.LocalIP
set Label3.Text to "当前SSID: " & WiFi1.SSID
else
set ...
GestureDetect 扩展：手势检测扩展，识别滑动、点击和长按手势 · App Inventor 2 中文网
...木块处理各种手势事件
配置示例
在 Screen1.Initialize 事件中：
当 Screen1.初始化
设置 GestureDetect1.布局 为 HorizontalArrangement1
事件
OnSwipeUp 上滑(组件)
当用户在指定组件上执行上滑手势时...
Android, ListView IllegalStateException: “The content of the adapter has changed but ListView did no
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Here is my case specific code for others to refer.
My loader on the main screen loads the phone book contacts into my data sources in the background.
@Override
public Void loadInBackground() {
Log.v(TAG, "Init loadings contacts");
synchronized (SingleTonProvider.getInstanc...
How to create a multiline UITextfield?
...ar app makes View with placeholder and word wrap for notes at event adding screen ?
– Gennadiy Ryabkin
Dec 9 '14 at 11:24
3
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Detect Retina Display
...OS devices, you need to check if the device is running iOS4+ and if the [UIScreen mainScreen].scale property is equal to 2.0. You CANNOT assume a device is running iOS4+ if the scale property exists, as the iPad 3.2 also contains this property.
On an iPad running iOS3.2, scale will return 1.0 in 1...
How do you install Google frameworks (Play, Accounts, etc.) on a Genymotion virtual device? [duplica
...e Apps for Android 4.1
Next open your Genymotion VM and go to the home screen
Now drag&drop the Genymotion-ARM-Translation_v1.1.zip onto the Genymotion VM window.
It should say "File transfer in progress". Once it asks you to flash it, click 'OK'.
Now reboot your VM using ADB (adb reboot) or...
How to Resize a Bitmap in Android?
...this, it will be full in the imageview. If i scale it down say 75% and the screen is so that it displays scaled image also fully in imageview, what should be done for such screens?
– jxgn
Jan 4 '13 at 8:54
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Center a button in a Linear layout
I am using a linear layout to display a pretty light initial screen. It has 1 button that is supposed to centre in the screen both horizontally and vertically. However no matter what I try to do the button will top align centre. I have included the XML below, can some one point me in the right di...
Android: How to Programmatically set the size of a Layout
...ent LinearLayout. The idea is, based on the pixel count and density of the screen, to set the size of the containing layout to a number of pixels; and have the button set resize itself based on that change.
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Vagrant stuck connection timeout retrying
...S.
My problem is the same string of timeouts but I could only see a black screen in the GUI.
A laptop which I was just setting up kept showing the same problem. After hours of searching I finally found a tip to see if the BIOS had Hardware Virtualisation was enabled.
Here's the content of the pos...