Consle：
Android requires compiler compliance level 5.0 or 6.0. Found '1.8' instead. Please use Android Tools > Fix Project Properties.
However, according to the prompt method, when right-clicking the project - "Android Tools-" Fix Project Properties, it was found to be useless. . .
My solution is:
Right-click the project - "Properties, change JavaCompiler to version 1.7, neither 1.6 nor 1.8 will work. . .
