how to fix security certificate error android

Preface I haven't developed Android for a while. Recently, the company has taken over an android project. Since there have been errors in updating android with eclipse before, take this opportunity to reinstall the SDK and eclipse. The installation was successful, but an error occurred while planning to add the orig

Open the project's Androidmanifest.xml file and modify the Android:targetsdkversion version value to a lower version, such as android:targetsdkversion= "21" to a value of "20" or the following. When you are finished modifying. (Project-> the Context Menu, Android Tools, Fix project Properties once, then empty all the items and compile automatically), so the problem is solved.Fix an issue that prompts ' Runn

Under Android, sometimes when we import our own projects or others ' projects into our own local, we see a red "X" or "!" in front of the project. ", such as:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/26/CB/wKiom1NszhDwyx06AAAdkjfP2Fs387.jpg "title=" Qq20140509204215.png "alt=" Wkiom1nszhdwyx06aaadkjfp2fs387.jpg "/>Or650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/26/CB/wKioL1Nsz1Dz3MfeAAASfddIDMo969.jpg "title=" Qq201405092