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					|  |  |  |  |     * [Other](#other) | 
			
		
	
		
			
				
					|  |  |  |  | * [common problem](#common-problem) | 
			
		
	
		
			
				
					|  |  |  |  |     * [Start adb server failure](#start-adb-server-failure) | 
			
		
	
		
			
				
					|  |  |  |  |     * [com.android.ddmlib.AdbCommandRejectedException](#comandroidddmlibadbcommandrejectedexception) | 
			
		
	
		
			
				
					|  |  |  |  | * [adb unofficial implementation](#adb-unofficial-implementation) | 
			
		
	
		
			
				
					|  |  |  |  | * [Acknowledgements](#acknowledgements) | 
			
		
	
		
			
				
					|  |  |  |  | * [Reference Links](#reference-links) | 
			
		
	
	
		
			
				
					|  |  |  | @ -2304,6 +2305,21 @@ taskkill /PID 1548 | 
			
		
	
		
			
				
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					|  |  |  |  | Then start adb no problem. | 
			
		
	
		
			
				
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					|  |  |  |  | ### com.android.ddmlib.AdbCommandRejectedException | 
			
		
	
		
			
				
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					|  |  |  |  | Create a new emulator in Android Studio, but cannot connect with adb, output is: | 
			
		
	
		
			
				
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					|  |  |  |  | ``` | 
			
		
	
		
			
				
					|  |  |  |  | com.android.ddmlib.AdbCommandRejectedException: device unauthorized. | 
			
		
	
		
			
				
					|  |  |  |  | This adb server's $ADB_VENDOR_KEYS is not set | 
			
		
	
		
			
				
					|  |  |  |  | Try 'adb kill-server' if that seems wrong. | 
			
		
	
		
			
				
					|  |  |  |  | Otherwise check for a confirmation dialog on your device. | 
			
		
	
		
			
				
					|  |  |  |  | ``` | 
			
		
	
		
			
				
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					|  |  |  |  | After install a terminal app in emulator and run `su` command, it shows no su program, that is not normal. | 
			
		
	
		
			
				
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					|  |  |  |  | So just delete the emulator and re-download, reinstall, all is well now. | 
			
		
	
		
			
				
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					|  |  |  |  | ## adb unofficial implementation | 
			
		
	
		
			
				
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					|  |  |  |  | * [fb-adb](https://github.com/facebook/fb-adb) - A better shell for Android devices (for Mac). | 
			
		
	
	
		
			
				
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