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App Inventor 2 蓝牙发送十六进制字节方案：文本转Hex字节详解 - App应用开...
问题描述用户在文本框输入"ABCD"，想通过蓝牙发送 0xAB 0xCD 两个字节，而不是四个ASCII字符（0x41 0x42 0x43 0x44）。
每两个字符代表一个十六进制字节，需要将字符对解析为实际的字节值。
问题本质输入期望发送实际发送...
How to open standard Google Map application from my application?
Once user presses button in my application, I would like to open standard Google Map application and to show particular location. How can I do it? (without using com.google.android.maps.MapView )
...
How can I access Google Sheet spreadsheets only with Javascript?
... way to access Google APIs with JavaScript, and that would be from Node.js apps using its client library, so I added it below.
It's Mar 2017, and most of the answers here are outdated -- the accepted answer now refers to a library that uses an older API version. A more current answer: you can acces...
How can I uninstall an application using PowerShell?
...Remove Programs ' functionality using PowerShell to uninstall an existing application ? Or to check if the application is installed?
...
How to empty a Heroku database
I'm working on a Ruby on Rails 3 webapp on Heroku. How do I empty the database?
18 Answers
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Passing command line arguments from Maven as properties in pom.xml
...>
Use outputDirectory if you want properties to be accessible by your app code:
<configuration>
<outputFile>${project.build.outputDirectory}/my.properties</outputFile>
</configuration>
For those looking for a fuller example (it took me a bit of fiddling to get thi...
Return JSON response from Flask view
...nify function, which returns a JSON response.
from flask import jsonify
@app.route('/summary')
def summary():
d = make_summary()
return jsonify(d)
As of Flask 0.11, you can pass any JSON-serializable type, not just dict, as the top level object.
...
Error when testing on iOS simulator: Couldn't register with the bootstrap server
I was testing my app on the simulator when it crashed on clicking a button of a UIAlertView. I stopped debugging there, made some changes to the code and built the app again. Now when I run the application, I get this error in the console
...
Angularjs - display current date
...unction Ctrl($scope)
{
$scope.date = new Date();
}
view:
<div ng-app ng-controller="Ctrl">
{{date | date:'yyyy-MM-dd'}}
</div>
JSFiddle example
Angular Date Filter Ref
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Alarm Manager Example
...eceiver>
...
Code in your class:
package yourPackage;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.PowerManager;
import android.widget.Toast;
public...