Eclipse content Assist not available @ Current location

In Android development, today my new computer installed Eclipse, in the XML write control property values, no hint, this makes me very depressed, this is not conducive to work ah, find a lot of solutions on the Internet, but not a successful,

After his own groping, finally found a solution, click Window-->preferences-->xml---XML files-->editors--and content Assist, in prompt When these characters is inserted option add: <=: ",

This is the perfect solution.

Eclipse content Assist not available @ Current location