Device target version level 29 
If I used android:requestLegacyExternalStorage="true" , app will not start installing to device .
	
	
	
	
	
	
	
		
			
			
			
			
			
		
	
	
	
		
	
	
		
	
			
			If I used android:requestLegacyExternalStorage="true" , app will not start installing to device .
			
				B4X:
			
		
		
		AddManifestText(
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="29"/>
<supports-screens android:largeScreens="true" 
    android:normalScreens="true" 
    android:smallScreens="true" 
    android:anyDensity="true"/>
<application android:requestLegacyExternalStorage="true"  >
</application>    
<uses-permission
    android:name="android.permission.WRITE_EXTERNAL_STORAGE"
    android:maxSdkVersion="29" />
) 
				 
 
		 
 
		 
 
		 
 
		 
 
		