管理一些手机中的Apk或者其他应用程序：
一、自己封装的类ApkManager，关于Apk的操作，很少,日后再行补充。
(1) 获取当前程序版本
public static String getVersionName(Context context) {
PackageManager packageManager = null;
PackageInfo packInfo = null;
try {
packageManager = context.getPackageManager();
// getPackageName()获取当前程序包名， 0代表获取版本号
packInfo = packageManager.getPackageInfo(context.getPackageName(),
0);
return packInfo.versionName;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
return null;
}(2) 获取当前程序版本号
public static int getVersionCode(Context context) {
PackageManager packageManager = null;
PackageInfo packInfo = null;
try {
packageManager = context.getPackageManager();
// getPackageName()获取当前程序包名， 0代表获取版本号
packInfo = packageManager.getPackageInfo(context.getPackageName(),
0);
return packInfo.versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
return 0;
}（3）安装Apk
public static void installApk(Context context, File apk) {
Intent in = new Intent();
in.setAction(Intent.ACTION_VIEW);
in.setDataAndType(Uri.fromFile(apk),
"application/vnd.android.package-archive");
context.startActivity(in);
}
二、封装类InstallManager，关于安装包的一些操作。
（1）获取本地安装所有的非系统应用
public static List<AppInfoBean> getAllInstalledPackages(Context context) {
List<AppInfoBean> app_list = new ArrayList<AppInfoBean>();
// 获取所有的安装包
PackageManager pManager = context.getPackageManager();
List<PackageInfo> packages = pManager.getInstalledPackages(0);
for (PackageInfo pInfo : packages) {
byte[] appIcon = BitmapManager.getBytesFromDrawable(pInfo.applicationInfo.loadIcon(pManager));
AppInfoBean aib = new AppInfoBean(pInfo.applicationInfo.loadLabel(
pManager).toString(), pInfo.packageName, pInfo.versionName,
pInfo.versionCode, appIcon);
if ((pInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) > 0) {
// 这是系统应用程序
} else {
app_list.add(aib);
}
}
return app_list;
}（2）根据包名判断App是否安装
public static boolean isAppInstalled(Context context, String packageName) {
PackageInfo packageInfo;
try {
packageInfo = context.getPackageManager().getPackageInfo(
packageName, 0);
if (packageInfo != null) {
return true;
}
} catch (NameNotFoundException e) {
packageInfo = null;
Toast.makeText(context, "没有找到该应用，请检查是否正确安装", Toast.LENGTH_LONG)
.show();
e.printStackTrace();
}
return false;
}（3）启动App
public static void startInstalledApp(Context context, String packageName) {
if (packageName == null || packageName.equals("")) {
Toast.makeText(context, "无效应用", Toast.LENGTH_LONG).show();
return;
}
// 检测是否安装，若成功安装，那么启动该App
if (isAppInstalled(context, packageName)) {
try {
Intent in = context.getPackageManager()
.getLaunchIntentForPackage(packageName);
context.startActivity(in);
} catch (Exception e) {
Toast.makeText(context, "启动失败", Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
}（4）获取App应用名
public static String getAppName(Context context, String packageName){
PackageManager pManager = null;
ApplicationInfo mAppInfo = null;
try {
pManager = context.getPackageManager();
mAppInfo = pManager.getApplicationInfo(packageName, 0);
} catch (NameNotFoundException e) {
e.printStackTrace();
return null;
}
return mAppInfo.loadLabel(pManager).toString();
}（5）卸载App
public static void uninstallApp(Context context, String packageName) {
if (packageName == null || packageName.equals("")) {
Toast.makeText(context, "无效的应用程序", Toast.LENGTH_LONG).show();
return;
}
String appName = getAppName(context, packageName);
if(appName == null || appName.equals("")){
Toast.makeText(context, "您要卸载的程序不存在", Toast.LENGTH_LONG).show();
return;
}
Uri packageUri = Uri.parse("package:" + packageName+appName);
Intent in = new Intent(Intent.ACTION_DELETE, packageUri);
context.startActivity(in);
}部分APP操作代码。
