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App Inventor 2 报错：Error 908: The permission RECORD_AUDIO has been d...
报错截图如下：
原因；Screen中请求“声音”权限后，弹出权限请求对话框，选择了拒绝导致的。
此时的麦克风权限是禁止的：
---------------
打开App的设置，重新赋予麦克风的权限后，就ok了。
AI 伴侣报错：Error 908: The permission CAMERA has been denied. Please ...
解决方法：手机设置中 开启 AI伴侣的照相机权限。
BLE connection error “Connection status was set to OS code 133” - 创...
https://stackoverflow.com/questi ... droid-bluetooth-ble
问题原来是设备试图发送大于 MTU 大小的数据包，Android 默认为 23，至少在我测试的特定设备上是这样。
请求更大的 MTU 大小确实解决了问题。
但是，如果错误代码可以明确指出...
What is the 'new' keyword in JavaScript?
...:
It creates a new object. The type of this object is simply object.
It sets this new object's internal, inaccessible, [[prototype]] (i.e. __proto__) property to be the constructor function's external, accessible, prototype object (every function object automatically has a prototype property).
It...
Prefer composition over inheritance?
...ition, it's easy to change behavior on the fly with Dependency Injection / Setters. Inheritance is more rigid as most languages do not allow you to derive from more than one type. So the goose is more or less cooked once you derive from TypeA.
My acid test for the above is:
Does TypeB want to e...
How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
... THIS IS WRONG. DO NOT COPY IT. It's an EXAMPLE.
BEGIN;
UPDATE testtable
SET somedata = 'blah'
WHERE id = 2;
-- Remember, this is WRONG. Do NOT COPY IT.
INSERT INTO testtable (id, somedata)
SELECT 2, 'blah'
WHERE NOT EXISTS (SELECT 1 FROM testtable WHERE testtable.id = 2);
COMMIT;
then when tw...
What is the exact difference between currentTarget property and target property in javascript
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How does this JavaScript/jQuery syntax work: (function( window, undefined ) { })(window)?
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Create Test Class in IntelliJ
...
Still works nicely with 12.1.4 in Windows. Check in Settings that the Keymap binds Mainmenu/Navigate/Test to Ctrl+Shift+T
– Jarl
Aug 22 '13 at 11:37
4
...
Android Studio Collapse definitions and methods
...e sure it is enabled in config (it should be by default). Go to File -> Settings, then under the IDE Settings area find Editor -> General -> Code Folding, check the Show code folding outline.
To collapse/expand items use the Code -> Folding menu.
Edit:
To customize the keyboard shortcu...