清除android应用程序用户数据
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Clear android application user data
提问by UdayaLakmal
Using adb shellto clear application data
使用adb shell清除应用程序数据
adb shell pm clear com.android.browser
But when executing that command from application
但是当从应用程序执行该命令时
String deleteCmd = "pm clear com.android.browser";
Runtime runtime = Runtime.getRuntime();
try {
runtime.exec(deleteCmd);
} catch (IOException e) {
e.printStackTrace();
}
Issue:
问题：
It doesn't clear the user data neither gives any exception though I have given the following permission.
尽管我已授予以下权限，但它不会清除用户数据，也不会给出任何异常。
<uses-permission android:name="android.permission.CLEAR_APP_USER_DATA"/>
Question:
题：
How to clear the application data using adb shell?
如何使用adb shell清除应用程序数据？
采纳答案by Thkru
Afaik the Browser application data is NOT clearable for other apps, since it is store in private_mode. So executing this command could probalby only work on rooted devices. Otherwise you should try another approach.
Afaik 浏览器应用程序数据对于其他应用程序是不可清除的，因为它存储在private_mode. 因此，执行此命令可能仅适用于有 root 权限的设备。否则你应该尝试另一种方法。
回答by Manmohan Soni
This command will only clear the cache:
此命令只会清除缓存：
adb shell pm clear packageName
回答by fantouch
The command pm clear com.android.browserrequires root permission.
So, run sufirst.
该命令pm clear com.android.browser需要 root 权限。
所以，先跑su。
Here is the sample code:
这是示例代码：
private static final String CHARSET_NAME = "UTF-8";
String cmd = "pm clear com.android.browser";
ProcessBuilder pb = new ProcessBuilder().redirectErrorStream(true).command("su");
Process p = pb.start();
// We must handle the result stream in another Thread first
StreamReader stdoutReader = new StreamReader(p.getInputStream(), CHARSET_NAME);
stdoutReader.start();
out = p.getOutputStream();
out.write((cmd + "\n").getBytes(CHARSET_NAME));
out.write(("exit" + "\n").getBytes(CHARSET_NAME));
out.flush();
p.waitFor();
String result = stdoutReader.getResult();
The class StreamReader:
班级StreamReader：
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.concurrent.CountDownLatch;
class StreamReader extends Thread {
private InputStream is;
private StringBuffer mBuffer;
private String mCharset;
private CountDownLatch mCountDownLatch;
StreamReader(InputStream is, String charset) {
this.is = is;
mCharset = charset;
mBuffer = new StringBuffer("");
mCountDownLatch = new CountDownLatch(1);
}
String getResult() {
try {
mCountDownLatch.await();
} catch (InterruptedException e) {
e.printStackTrace();
}
return mBuffer.toString();
}
@Override
public void run() {
InputStreamReader isr = null;
try {
isr = new InputStreamReader(is, mCharset);
int c = -1;
while ((c = isr.read()) != -1) {
mBuffer.append((char) c);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (isr != null)
isr.close();
} catch (IOException e) {
e.printStackTrace();
}
mCountDownLatch.countDown();
}
}
}
回答by Md Abdul Gafur
To clear Application Data Please Try this way.
要清除应用程序数据请尝试这种方式。
public void clearApplicationData() {
File cache = getCacheDir();
File appDir = new File(cache.getParent());
if (appDir.exists()) {
String[] children = appDir.list();
for (String s : children) {
if (!s.equals("lib")) {
deleteDir(new File(appDir, s));Log.i("TAG", "**************** File /data/data/APP_PACKAGE/" + s + " DELETED *******************");
}
}
}
}
public static boolean deleteDir(File dir) {
if (dir != null && dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
return dir.delete();
}
回答by Strider
Hello UdayaLakmal,
你好 UdayaLakmal，
public class MyApplication extends Application {
private static MyApplication instance;
@Override
public void onCreate() {
super.onCreate();
instance = this;
}
public static MyApplication getInstance(){
return instance;
}
public void clearApplicationData() {
File cache = getCacheDir();
File appDir = new File(cache.getParent());
if(appDir.exists()){
String[] children = appDir.list();
for(String s : children){
if(!s.equals("lib")){
deleteDir(new File(appDir, s));
Log.i("TAG", "File /data/data/APP_PACKAGE/" + s +" DELETED");
}
}
}
}
public static boolean deleteDir(File dir) {
if (dir != null && dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
return dir.delete();
}
}
Please check this and let me know...
请检查这个并让我知道......
You can download code from here
你可以从这里下载代码
回答by My God
// To delete all the folders and files within folders recursively
File sdDir = new File(sdPath);
if(sdDir.exists())
deleteRecursive(sdDir);
// Delete any folder on a device if exists
void deleteRecursive(File fileOrDirectory) {
if (fileOrDirectory.isDirectory())
for (File child : fileOrDirectory.listFiles())
deleteRecursive(child);
fileOrDirectory.delete();
}
回答by Strider
If you want to do manually then You also can clear your user data by clicking “Clear Data”button in Settings–>Applications–>Manage Aplications–>YOUR APPLICATION
如果您想手动执行，那么您也可以通过单击 您的应用程序中的“Clear Data”按钮来清除您的用户数据Settings–>Applications–>Manage Aplications–>
or Is there any other way to do that?
Then Download code here
然后 在这里下载代码
