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其我的活动代码！如何退出时清除所有的应用程序缓存（如图像和数据） 可以帮助我如何做到这一点？ 当用户关闭我的应用程序时，所有缓存将自动删除。 对我很重要。代码清除应用程序缓存退出android
package app.tabb;
import co.ronash.pushe.Pushe;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Paint;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.content.ContextCompat;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.InterstitialAd;
import com.nostra13.universalimageloader.core.ImageLoader;
import java.io.File;
import java.util.ArrayList;
import app.tabb.data.AppConfig;
import app.tabb.data.DatabaseHandler;
import app.tabb.data.SharedPref;
import app.tabb.fragment.FragmentCategory;
import app.tabb.utils.Tools;
import uk.co.chrisjenx.calligraphy.CalligraphyContextWrapper;
public class ActivityMain extends AppCompatActivity {
//for ads
private InterstitialAd mInterstitialAd;
private ImageLoader imgloader = ImageLoader.getInstance();
public ActionBar actionBar;
public Toolbar toolbar;
private int cat[];
private FloatingActionButton fab;
private NavigationView navigationView;
private DatabaseHandler db;
private SharedPref sharedPref;
private RelativeLayout nav_header_lyt;
static ActivityMain activityMain;
ArrayList<String> slides;
ImageView imageView;
Custom_ViewFlipper viewFlipper;
GestureDetector mGestureDetector;
@Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(CalligraphyContextWrapper.wrap(newBase));
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
activityMain = this;
if (!imgloader.isInited()) Tools.initImageLoader(this);
fab = (FloatingActionButton) findViewById(R.id.fab);
db = new DatabaseHandler(this);
sharedPref = new SharedPref(this);
Pushe.initialize(this,true);
prepareAds();
initToolbar();
initDrawerMenu();
prepareImageLoader();
cat = getResources().getIntArray(R.array.id_category);
// first drawer view
onItemSelected(R.id.nav_featured);
actionBar.setTitle(getString(R.string.title_nav_featured));
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(ActivityMain.this, ActivitySearch.class);
startActivity(i);
}
});
// for system bar in lollipop
Tools.systemBarLolipop(this);
viewFlipper = (Custom_ViewFlipper) findViewById(R.id.vf);
slides = new ArrayList<>();
slides.add("http://www.bargnegar.ir/banner/1.jpg?");
slides.add("http://www.bargnegar.ir/banner/2.jpg?");
slides.add("http://www.bargnegar.ir/banner/3.jpg?");
slides.add("http://www.bargnegar.ir/banner/4.jpg?");
slides.add("http://www.bargnegar.ir/banner/5.jpg?");
int i = 0;
while(i<slides.size())
{
imageView = new ImageView(this);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
ImageLoader.getInstance().displayImage(slides.get(i),imageView);
viewFlipper.addView(imageView);
i++;
}
Paint paint = new Paint();
paint.setColor(ContextCompat.getColor(this,R.color.colorPrimary));
viewFlipper.setPaintCurrent(paint);
paint = new Paint();
paint.setColor(ContextCompat.getColor(this,android.R.color.white));
viewFlipper.setPaintNormal(paint);
viewFlipper.setRadius(6);
viewFlipper.setMargin(4);
CustomGestureDetector customGestureDetector = new CustomGestureDetector();
mGestureDetector = new GestureDetector(ActivityMain.this, customGestureDetector);
viewFlipper.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
mGestureDetector.onTouchEvent(motionEvent);
return true;
}
});
}
class CustomGestureDetector extends GestureDetector.SimpleOnGestureListener {
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
// Swipe left (next)
if (e1.getX() > e2.getX()) {
viewFlipper.setInAnimation(ActivityMain.this, R.anim.left_in);
viewFlipper.setOutAnimation(ActivityMain.this, R.anim.left_out);
viewFlipper.showNext();
}else if (e1.getX() < e2.getX()) {
viewFlipper.setInAnimation(ActivityMain.this, R.anim.right_in);
viewFlipper.setOutAnimation(ActivityMain.this, R.anim.right_out);
viewFlipper.showPrevious();
}
viewFlipper.setInAnimation(ActivityMain.this, R.anim.left_in);
viewFlipper.setOutAnimation(ActivityMain.this, R.anim.left_out);
return super.onFling(e1, e2, velocityX, velocityY);
}
}
private void initToolbar() {
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
actionBar = getSupportActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setHomeButtonEnabled(true);
Tools.setActionBarColor(this, actionBar);
}
private void initDrawerMenu() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close) {
@Override
public void onDrawerOpened(View drawerView) {
updateFavoritesCounter(navigationView, R.id.nav_favorites, db.getFavoritesSize());
showInterstitial();
super.onDrawerOpened(drawerView);
}
};
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem item) {
actionBar.setTitle(item.getTitle().toString());
return onItemSelected(item.getItemId());
}
});
// navigation header
View nav_header = navigationView.getHeaderView(0);
nav_header_lyt = (RelativeLayout) nav_header.findViewById(R.id.nav_header_lyt);
nav_header_lyt.setBackgroundColor(Tools.colorBrighter(sharedPref.getThemeColorInt()));
(nav_header.findViewById(R.id.menu_nav_setting)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(), ActivitySetting.class);
startActivity(i);
}
});
(nav_header.findViewById(R.id.menu_nav_map)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(), ActivityMaps.class);
startActivity(i);
}
});
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (!drawer.isDrawerOpen(GravityCompat.START)) {
drawer.openDrawer(GravityCompat.START);
} else {
doExitApp();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_activity_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
Intent i = new Intent(getApplicationContext(), ActivitySetting.class);
startActivity(i);
} else if (id == R.id.action_rate) {
Tools.rateAction(ActivityMain.this);
} else if (id == R.id.action_about) {
Tools.aboutAction(ActivityMain.this);
}
return super.onOptionsItemSelected(item);
}
public boolean onItemSelected(int id) {
// Handle navigation view item clicks here.
Fragment fragment = null;
Bundle bundle = new Bundle();
switch (id) {
//sub menu
case R.id.nav_all:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, -1);
break;
// favorites
case R.id.nav_favorites:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, -2);
break;
case R.id.nav_atolie:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[0]);
break;
case R.id.nav_arayesh:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[1]);
break;
case R.id.nav_behdashti:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[2]);
break;
case R.id.nav_safar:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[3]);
break;
case R.id.nav_peyk:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[4]);
break;
case R.id.nav_bank:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[5]);
break;
case R.id.nav_pooshak:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[6]);
break;
case R.id.nav_sukht:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[7]);
break;
case R.id.nav_khodro:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[8]);
break;
case R.id.nav_food:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[9]);
break;
case R.id.nav_featured:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[10]);
break;
case R.id.nav_zanjirei:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[11]);
break;
case R.id.nav_ghanadi:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[12]);
break;
case R.id.nav_coffeshop:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[13]);
break;
case R.id.nav_ketring:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[14]);
break;
case R.id.nav_tourismcenter:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[15]);
break;
case R.id.nav_shop:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[16]);
break;
case R.id.nav_hospital:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[17]);
break;
case R.id.nav_mobl:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[18]);
break;
case R.id.nav_mobile:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[19]);
break;
case R.id.nav_sport:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[20]);
break;
case R.id.nav_hotels:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[21]);
break;
case R.id.nav_khanegi:
fragment = new FragmentCategory();
bundle.putInt(FragmentCategory.TAG_CATEGORY, cat[22]);
break;
default:
break;
/* IMPORTANT : cat[index_array], index is start from 0
*/
}
if (fragment != null) {
fragment.setArguments(bundle);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.frame_content, fragment);
fragmentTransaction.commit();
//initToolbar();
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
private void hideKeyboard() {
View view = this.getCurrentFocus();
if (view != null) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}
private long exitTime = 0;
public void doExitApp() {
if ((System.currentTimeMillis() - exitTime) > 2000) {
Toast.makeText(this, R.string.press_again_exit_app, Toast.LENGTH_SHORT).show();
exitTime = System.currentTimeMillis();
} else {
finish();
}
}
private void prepareImageLoader() {
Tools.initImageLoader(this);
}
private void showDialogGPS() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(false);
builder.setTitle("مکان یابی خودکار");
builder.setMessage("سرویس مکان یابی دیوایس شما فعال نیست . جهت استفاده بهتر از برنامه لطفا آن را فعال کنید.");
builder.setInverseBackgroundForced(true);
builder.setPositiveButton("فعال کردن", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
startActivity(
new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
});
builder.setNegativeButton("نادیده گرفتن", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
@Override
protected void onResume() {
LocationManager mlocManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
boolean enabled = mlocManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
if(!enabled) {
showDialogGPS();
}
if (!imgloader.isInited()) Tools.initImageLoader(this);
updateFavoritesCounter(navigationView, R.id.nav_favorites, db.getFavoritesSize());
if (actionBar != null) {
Tools.setActionBarColor(this, actionBar);
// for system bar in lollipop
Tools.systemBarLolipop(this);
}
if (nav_header_lyt != null) {
nav_header_lyt.setBackgroundColor(Tools.colorBrighter(sharedPref.getThemeColorInt()));
}
super.onResume();
}
private void updateFavoritesCounter(NavigationView nav, @IdRes int itemId, int count) {
TextView view = (TextView) nav.getMenu().findItem(itemId).getActionView().findViewById(R.id.counter);
view.setText(String.valueOf(count));
}
private void prepareAds() {
// Create the InterstitialAd and set the adUnitId.
mInterstitialAd = new InterstitialAd(this);
// Defined in res/values/strings.xml
mInterstitialAd.setAdUnitId(getString(R.string.interstitial_ad_unit_id));
//prepare ads
AdRequest adRequest2 = new AdRequest.Builder().build();
mInterstitialAd.loadAd(adRequest2);
}
/**
* show ads
*/
public void showInterstitial() {
// Show the ad if it's ready
if (AppConfig.ADS_MAIN_INTERSTITIAL && mInterstitialAd != null && mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
}
}
public static ActivityMain getInstance() {
return activityMain;
}
public static void animateFab(final boolean hide) {
FloatingActionButton f_ab = (FloatingActionButton) activityMain.findViewById(R.id.fab);
int moveY = hide ? (2 * f_ab.getHeight()) : 0;
f_ab.animate().translationY(moveY).setStartDelay(100).setDuration(400).start();
}
}