リンクをたどります。うまくいけば、ソリューション
https://fossdroid.com/s.html?q=cache+cleaner
import android.Manifest;
import android.app.ProgressDialog;
import android.content.ComponentName;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.ServiceConnection;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.IBinder;
import android.os.StatFs;
import android.preference.PreferenceManager;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.view.MenuItemCompat;
import android.support.v4.view.ViewCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.SearchView;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.TextView;
import android.widget.Toast;
import com.frozendevs.cache.cleaner.R;
import com.frozendevs.cache.cleaner.activity.SettingsActivity;
import com.frozendevs.cache.cleaner.model.AppsListItem;
import com.frozendevs.cache.cleaner.model.CleanerService;
import com.frozendevs.cache.cleaner.model.adapter.AppsListAdapter;
import com.frozendevs.cache.cleaner.widget.DividerDecoration;
import com.frozendevs.cache.cleaner.widget.RecyclerView;
import java.util.List;
public class CleanerFragment extends Fragment implements CleanerService.OnActionListener {
private static final int REQUEST_STORAGE = 0;
private static final String[] PERMISSIONS_STORAGE = {
Manifest.permission.WRITE_EXTERNAL_STORAGE
};
private CleanerService mCleanerService;
private AppsListAdapter mAppsListAdapter;
private TextView mEmptyView;
private SharedPreferences mSharedPreferences;
private ProgressDialog mProgressDialog;
private View mProgressBar;
private TextView mProgressBarText;
private LinearLayoutManager mLayoutManager;
private Menu mOptionsMenu;
private boolean mAlreadyScanned = false;
private boolean mAlreadyCleaned = false;
private String mSearchQuery;
private String mSortByKey;
private String mCleanOnAppStartupKey;
private String mExitAfterCleanKey;
private ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
mCleanerService = ((CleanerService.CleanerServiceBinder) service).getService();
mCleanerService.setOnActionListener(CleanerFragment.this);
updateStorageUsage();
if (!mCleanerService.isCleaning() && !mCleanerService.isScanning()) {
if (mSharedPreferences.getBoolean(mCleanOnAppStartupKey, false) &&
!mAlreadyCleaned) {
mAlreadyCleaned = true;
cleanCache();
} else if (!mAlreadyScanned) {
mCleanerService.scanCache();
}
}
}
@Override
public void onServiceDisconnected(ComponentName name) {
mCleanerService.setOnActionListener(null);
mCleanerService = null;
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
setRetainInstance(true);
mSortByKey = getString(R.string.sort_by_key);
mCleanOnAppStartupKey = getString(R.string.clean_on_app_startup_key);
mExitAfterCleanKey = getString(R.string.exit_after_clean_key);
mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
mAppsListAdapter = new AppsListAdapter();
mProgressDialog = new ProgressDialog(getActivity());
mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
mProgressDialog.setCanceledOnTouchOutside(false);
mProgressDialog.setTitle(R.string.cleaning_cache);
mProgressDialog.setMessage(getString(R.string.cleaning_in_progress));
mProgressDialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
@Override
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
return true;
}
});
getActivity().getApplication().bindService(new Intent(getActivity(), CleanerService.class),
mServiceConnection, Context.BIND_AUTO_CREATE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.cleaner_fragment, container, false);
mEmptyView = (TextView) rootView.findViewById(R.id.empty_view);
mLayoutManager = new LinearLayoutManager(getActivity());
RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setAdapter(mAppsListAdapter);
recyclerView.setEmptyView(mEmptyView);
recyclerView.addItemDecoration(new DividerDecoration(getActivity()));
mProgressBar = rootView.findViewById(R.id.progressBar);
mProgressBarText = (TextView) rootView.findViewById(R.id.progressBarText);
return rootView;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
mOptionsMenu = menu;
inflater.inflate(R.menu.main_menu, menu);
final MenuItem searchItem = menu.findItem(R.id.action_search);
final SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
mSearchQuery = query;
searchView.clearFocus();
return true;
}
@Override
public boolean onQueryTextChange(String newText) {
if (ViewCompat.isLaidOut(searchView) && mSearchQuery != null) {
String oldText = mSearchQuery;
mSearchQuery = newText;
if (!oldText.equals(newText)) {
mAppsListAdapter.sortAndFilter(getActivity(), getSortBy(), newText);
}
}
return true;
}
});
MenuItemCompat.setOnActionExpandListener(searchItem,
new MenuItemCompat.OnActionExpandListener() {
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
if (mSearchQuery == null) {
mSearchQuery = "";
}
mAppsListAdapter.setShowHeaderView(false);
mEmptyView.setText(R.string.no_such_app);
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
mSearchQuery = null;
mAppsListAdapter.clearFilter();
mAppsListAdapter.setShowHeaderView(true);
if (mLayoutManager.findFirstCompletelyVisibleItemPosition() == 0) {
mLayoutManager.scrollToPosition(0);
}
mEmptyView.setText(R.string.empty_cache);
return true;
}
});
if (mSearchQuery != null) {
MenuItemCompat.expandActionView(searchItem);
searchView.setQuery(mSearchQuery, false);
}
updateOptionsMenu();
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_clean:
if (mCleanerService != null && !mCleanerService.isScanning() &&
!mCleanerService.isCleaning() && mCleanerService.getCacheSize() > 0) {
mAlreadyCleaned = false;
cleanCache();
}
return true;
case R.id.action_refresh:
if (mCleanerService != null && !mCleanerService.isScanning() &&
!mCleanerService.isCleaning()) {
mCleanerService.scanCache();
}
return true;
case R.id.action_settings:
startActivity(new Intent(getActivity(), SettingsActivity.class));
return true;
case R.id.action_sort_by_app_name:
setSortBy(AppsListAdapter.SortBy.APP_NAME);
updateOptionsMenu();
return true;
case R.id.action_sort_by_cache_size:
setSortBy(AppsListAdapter.SortBy.CACHE_SIZE);
updateOptionsMenu();
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onPrepareOptionsMenu(Menu menu) {
updateOptionsMenu();
}
@Override
public void onDestroyOptionsMenu() {
mOptionsMenu = null;
}
@Override
public void onResume() {
updateStorageUsage();
updateOptionsMenu();
if (mCleanerService != null) {
if (mCleanerService.isScanning() && !isProgressBarVisible()) {
showProgressBar(true);
} else if (!mCleanerService.isScanning() && isProgressBarVisible()) {
showProgressBar(false);
}
if (mCleanerService.isCleaning() && !mProgressDialog.isShowing()) {
mProgressDialog.show();
}
}
super.onResume();
}
@Override
public void onPause() {
if (mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
super.onPause();
}
@Override
public void onDestroy() {
getActivity().getApplication().unbindService(mServiceConnection);
super.onDestroy();
}
private void updateOptionsMenu() {
if (mOptionsMenu != null) {
mOptionsMenu.findItem(R.id.action_sort_by_app_name).setVisible(
getSortBy() == AppsListAdapter.SortBy.CACHE_SIZE);
mOptionsMenu.findItem(R.id.action_sort_by_cache_size).setVisible(
getSortBy() == AppsListAdapter.SortBy.APP_NAME);
}
}
private void updateStorageUsage() {
if (mAppsListAdapter != null) {
StatFs stat = new StatFs(Environment.getDataDirectory().getAbsolutePath());
long totalMemory = (long) stat.getBlockCount() * (long) stat.getBlockSize();
long medMemory = mCleanerService != null ? mCleanerService.getCacheSize() : 0;
long lowMemory = (long) stat.getAvailableBlocks() * (long) stat.getBlockSize();
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB &&
!Environment.isExternalStorageEmulated()) {
stat = new StatFs(Environment.getExternalStorageDirectory().getAbsolutePath());
totalMemory += (long) stat.getBlockCount() * (long) stat.getBlockSize();
lowMemory += (long) stat.getAvailableBlocks() * (long) stat.getBlockSize();
}
long highMemory = totalMemory - medMemory - lowMemory;
mAppsListAdapter.updateStorageUsage(totalMemory, lowMemory, medMemory, highMemory);
}
}
private AppsListAdapter.SortBy getSortBy() {
try {
return AppsListAdapter.SortBy.valueOf(mSharedPreferences.getString(mSortByKey,
AppsListAdapter.SortBy.CACHE_SIZE.toString()));
} catch (ClassCastException e) {
return AppsListAdapter.SortBy.CACHE_SIZE;
}
}
private void setSortBy(AppsListAdapter.SortBy sortBy) {
mSharedPreferences.edit().putString(mSortByKey, sortBy.toString()).apply();
if (mCleanerService != null && !mCleanerService.isScanning() &&
!mCleanerService.isCleaning()) {
mAppsListAdapter.sortAndFilter(getActivity(), sortBy, mSearchQuery);
}
}
private boolean isProgressBarVisible() {
return mProgressBar.getVisibility() == View.VISIBLE;
}
private void showProgressBar(boolean show) {
if (show) {
mProgressBar.setVisibility(View.VISIBLE);
} else {
mProgressBar.startAnimation(AnimationUtils.loadAnimation(
getActivity(), android.R.anim.fade_out));
mProgressBar.setVisibility(View.GONE);
}
}
private void showStorageRationale() {
AlertDialog dialog = new AlertDialog.Builder(getActivity()).create();
dialog.setTitle(R.string.rationale_title);
dialog.setMessage(getString(R.string.rationale_storage));
dialog.setButton(AlertDialog.BUTTON_POSITIVE, getString(android.R.string.ok),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
dialog.show();
}
private void cleanCache() {
if (!CleanerService.canCleanExternalCache(getActivity())) {
if (shouldShowRequestPermissionRationale(PERMISSIONS_STORAGE[0])) {
showStorageRationale();
} else {
requestPermissions(PERMISSIONS_STORAGE, REQUEST_STORAGE);
}
} else {
mCleanerService.cleanCache();
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
if (requestCode == REQUEST_STORAGE) {
if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
mCleanerService.cleanCache();
} else {
showStorageRationale();
}
} else {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
@Override
public void onScanStarted(Context context) {
if (isAdded()) {
if (mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
mProgressBarText.setText(R.string.scanning);
showProgressBar(true);
}
}
@Override
public void onScanProgressUpdated(Context context, int current, int max) {
if (isAdded()) {
mProgressBarText.setText(getString(R.string.scanning_m_of_n, current, max));
}
}
@Override
public void onScanCompleted(Context context, List<AppsListItem> apps) {
mAppsListAdapter.setItems(getActivity(), apps, getSortBy(), mSearchQuery);
if (isAdded()) {
updateStorageUsage();
showProgressBar(false);
}
mAlreadyScanned = true;
}
@Override
public void onCleanStarted(Context context) {
if (isAdded()) {
if (isProgressBarVisible()) {
showProgressBar(false);
}
if (!getActivity().isFinishing()) {
mProgressDialog.show();
}
}
}
@Override
public void onCleanCompleted(Context context, boolean succeeded) {
if (succeeded) {
mAppsListAdapter.trashItems();
}
if (isAdded()) {
updateStorageUsage();
if (mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
}
Toast.makeText(context, succeeded ? R.string.cleaned : R.string.toast_could_not_clean,
Toast.LENGTH_LONG).show();
if (succeeded && getActivity() != null && !mAlreadyCleaned &&
mSharedPreferences.getBoolean(mExitAfterCleanKey, false)) {
getActivity().finish();
}
}
}
@デビッドワッサー、http://stackoverflow.com/questions/14507092/android-clear-cache-of-all-apps/14509140?noredirectは、私を助けてくださいます –
同じ問題がここにあります。私はAndroid 6(Marshmallow)でこれを解決できません –
私の質問と同じです:http://stackoverflow.com/questions/36829176/how-to-delete-app-cache-for-all-apps-in-android- m –