Android：彻底清除APP数据的几种方案总结
public void use(){
//使用
clearPublic();
clearPublic();
restartApp();
}
public static void restartApp() {
Activity activity = getActivity();
final Intent intent = activity.getPackageManager().getLaunchIntentForPackage(activity.getPackageName());
if (intent != null) {
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
activity.startActivity(intent);
}
//杀掉以前进程
android.os.Process.killProcess(android.os.Process.myPid());
}
/**
* 清空公有目录
*/
public static void clearPublic() {
if (ApplicationManager.getApplication() == null) {
throw new RuntimeException("App no init");
}
String publicFilePath = Environment.getExternalStorageDirectory().getPath() + "/" + getPackageInfo().packageName;
File dir = new File(publicFilePath);
File[] files = dir.listFiles();
if (null != files) {
for (File file : files) {
deleteFolder(file.getAbsolutePath());
}
}
}
/**
* 清空私有目录
*/
public static void clearPrivate() {
if (ApplicationManager.getApplication() == null) {
throw new RuntimeException("App no init");
}
//清空文件夹
File dir = new File(ApplicationManager.getApplication().getFilesDir().getParent());
File[] files = dir.listFiles();
if (null != files) {
for (File file : files) {
if (!file.getName().contains("lib")) {
deleteFolder(file.getAbsolutePath());
}
}
}
}
/**
* 删除指定文件
*/
private static boolean deleteDirectory(String filePath) {
boolean flag = false;
if (!filePath.endsWith(File.separator)) {
filePath = filePath + File.separator;
}
File dirFile = new File(filePath);
if (!dirFile.exists() || !dirFile.isDirectory()) {
return false;
}
flag = true;
File[] files = dirFile.listFiles();
for (File file : files) {
if (file.isFile()) {
flag = deleteSingleFile(file.getAbsolutePath());
if (!flag) {
break;
}
} else {
flag = deleteDirectory(file.getAbsolutePath());
if (!flag) {
break;
}
}
}
if (!flag) {
return false;
}
return dirFile.delete();
}
/**
* 删除单个文件
*
* @param filePath 被删除文件的文件名
* @return 文件删除成功返回true，否则返回false
*/
private static boolean deleteSingleFile(String filePath) {
File file = new File(filePath);
if (file.isFile() && file.exists()) {
return file.delete();
}
return false;
}
/**
* 根据路径删除指定的目录或文件，无论存在与否
*/
private static boolean deleteFolder(String filePath) {
File file = new File(filePath);
if (!file.exists()) {
return false;
} else {
if (file.isFile()) {
return deleteSingleFile(filePath);
} else {
return deleteDirectory(filePath);
}
}
}
/**
* 获取包信息
*/
private static PackageInfo getPackageInfo() {
PackageManager packageManager = ApplicationManager.getApplication().getPackageManager();
PackageInfo packInfo = null;
try {
packInfo = packageManager.getPackageInfo(ApplicationManager.getApplication().getPackageName(), 0);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return packInfo;
}