BluetoothHandler | BluetoothHandler（非低频蓝牙）（RFCOMM通信）（单连接）
kandi X-RAY | BluetoothHandler Summary
kandi X-RAY | BluetoothHandler Summary
BluetoothHandler
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Top functions reviewed by kandi - BETA
- Connect to RfCommocket
- Close bluetooth socket
- Get Bluetooth adapter
- Close the default thread
- Write a string to the default thread
- Write string to socket
- Convert a hex string to a byte array
- Convert char to byte
- Open Bluetooth device
- Set the Bluetooth SDK s callbacks to use for bluetooth API calls
- Check if Bluetooth is supported
- Check if Bluetooth is enabled
- Connect to bluetooth device
- Set a bluetooth date callback to be used
- Register Bluetooth switch call
- Set the BluetoothSwitch call back
- Register default broadcast receivers
- Return a list of all bonded devices
- Callback handler method
- Handles messages
- Unregister broadcast receiver
BluetoothHandler Key Features
BluetoothHandler Examples and Code Snippets
Community Discussions
Trending Discussions on BluetoothHandler
QUESTION
I'm trying to set up Bluetooth in my app. For now, I want the app to turn on Bluetooth if it's not already. Whenever I run my code I get an error (below) and the app crashes - the frustrating part is, I had this working fine yesterday and I don't recall what I must've changed to make it not work anymore. Please help me fix this! Here is my code and errors:
in class MainActivity:
...ANSWER
Answered 2020-May-21 at 16:34Please make sure you have enabled the bluetooth adapter
QUESTION
i have an a fragment that have a background thread that update a progress bar value and change the progress bar drawable when the progress value reach a certain value when i try to start onther fragment in the same activity it case this error
...ANSWER
Answered 2017-Feb-25 at 13:43Dalvik keeps all Thread references in the runtime so your thread will keep running unless it is terminated or completes (some reference). So depending on where you start your thread, you may be creating more than one.
In your case Your thread execution is not completed and you change the fragment so your getActivity() will be null.
The solution is before getActivity(), check isAdded() is true or not, if not true, that means the fragment is already detached, call to getActivity() will return null.
Remember in the Thread, everywhere before you call getActivity(), you'd better to check isAdded() again, because user may exit the activity at anytime during the Thread is executing.
Other Solution
I am not sure but you can achieve by initialize Context globally and you that context in your thread.
QUESTION
When I try to sign a hashed value in my android app that I get from outside, I get the above mentioned exception.
The code for generating the keypair is:
...ANSWER
Answered 2017-Feb-16 at 12:24Encryption with private key using RSA/ECB/PKCS1Padding is available on AndroidKeyStore from Android 18, so you should be able to perform a valid digital signature with the received hash.
I guess the problem is setting the key usage to sign and not for encryption (that is really what you want the key for). Try this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install BluetoothHandler
You can use BluetoothHandler like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the BluetoothHandler component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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