判断是否已经安装android应用

public boolean isMobile_spExist() {

PackageManager manager = mContext.getPackageManager();

List<PackageInfo> pkgList = manager.getInstalledPackages(0);

for (int i = 0; i < pkgList.size(); i++) {

PackageInfo pI = pkgList.get(i);

if (pI.packageName.equalsIgnoreCase("com.my.alipay.android.app"))//根据安装的应用的包名判断

return true;

}

return false;

}