检测程序是不是被下载过在市场上
try { PackageManager manager = context.getPackageManager(); PackageInfo appInfo = manager.getPackageInfo( YOUR_PACKAGE_NAME, PackageManager.GET_SIGNATURES); // Now test if the first signature equals your debug key. boolean shouldUseTestServer = appInfo.signatures[0].toCharsString().equals(YOUR_DEBUG_KEY); } catch (NameNotFoundException e) { // Expected exception that occurs if the package is not present. } ?