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条码扫描器组件扫描时报错:Your device does not have a scanning applica...
转:App里面能了一个扫描功能,但在使用扫描功能时,提示,须要扫描程序,还须要安装什么吗?扫描二维码,使用的是App自带的扫描摸块。
解决:
[hide]
不使用外部扫描器,这个属性设置为假(去掉勾选)即可
原理...
【ClientSocketAI2Ext】拓展报错信息如何自定义展示? - App Inventor 2 拓...
目前该拓展报错(比如IP或端口不通)后,直接App崩溃退出,如下:
如何自定义并友好地展示报错信息呢?
一般地,使用屏幕1.出现错误 这个事件:
但是经过测试,此方式无效,系统还是按照自己的错误提示显示,并...
cn.fun123.ClientSocketAI2Ext 中文网升级版 Socket客户端拓展,TCP通信拓...
...t
已经加入发送二进制的接口。
原版:
报错后,App直接崩溃,没得选择,体验不好!
AppInventor2中文网升级版:
连接出错后,使用对话框组件个性展示出错信息,App仍然能够正常运行:
注:由于此拓展编译...
【拍照图片处理】Attempt to invoke virtual method 'boolean android.grap...
在做图片识别App的时候,选择相册图片没有问题,拍照后图片就报错:
Attempt to invoke virtual method 'boolean android.graphics.Bitmap.compress(android.graphics.Bitmap$CompressFormat, int, java.io.OutputStream)' on a null object reference
图片大致的处理流程是...
ActionBar 拓展:溢出菜单 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
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怎么修改应用右上角3个点里面的内容
在 App Inventor 中,应用右上角的 “三个点”菜单(也叫“溢出菜单”或“ActionBar 菜单”)是 Android 应用常见的导航区域。默认情况下,App Inventor 并没有直接提供一个图形组件来编辑这...
Async Procedures 拓展:异步任务拓展,异步处理耗时任务 - App Inventor 2...
...u no longer have to wait for a loop to finish and don’t worry about your app Crashing due to Android System thinking that your app crashed while doing intense processes.BLOCKS:EVENTS :
[color=var(--tertiary)][color=var(--secondary)]Capture[color=var(--secondary-high)]352×100 4.28 KB
FUNCTIONS...
ListView/ListPicker搜索框字体大小无法设置?源码分析与解决方案 - App应...
...框字体大小的地方。
二、源码深度分析
我查阅了MIT App Inventor 2最新源码(master分支),确认了以下事实:
1. ListView组件
搜索框是一个原生的EditText,在构造函数中创建:
txtSearchBox = new EditText(container.$context());
txtSearchB...
The model used to open the store is incompatible with the one used to create the store
...
Deleting the app is sometimes not the case! Suggest, your app has already been published! You can't just add new entity to the data base and go ahead - you need to perform migration!
For those who doesn't want to dig into documentation a...
This version of the application is not configured for billing through Google Play
When I try to run my application with in-app billing I am getting the error: "This version of the application is not configured for billing through Google Play. Check the help center for more information".
...
Using getResources() in non-activity class
... it. Either this if you have a reference to the class in an activty, or getApplicationContext()
public class MyActivity extends Activity {
public void onCreate(Bundle savedInstanceState) {
RegularClass regularClass = new RegularClass(this);
}
}
Then you can use it in the construct...
