Example usage for android.content Context getApplicationContext

Introduction

In this page you can find the example usage for android.content Context getApplicationContext.

Prototype

public abstract Context getApplicationContext();

Source Link

Document

Return the context of the single, global Application object of the current process.

Usage

From source file:Main.java

/**
 * @param context/*from   w w w.ja  v  a  2s  .  c o  m*/
 * @return KeyHash
 * follow facebook developers link to get release key hash
 * https://developers.facebook.com/docs/android/getting-started#release-key-hash
 */
public static String getKeyHash(Context context) {
    PackageInfo packageInfo;
    String key = null;
    try {
        packageInfo = context.getPackageManager().getPackageInfo(
                context.getApplicationContext().getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : packageInfo.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
        }
    } catch (PackageManager.NameNotFoundException e1) {
    } catch (NoSuchAlgorithmException e) {
    } catch (Exception e) {
    }
    return key;
}

From source file:Main.java

public static void unRegisterBroadcastReceiver(Context context, BroadcastReceiver broadcastReceiver) {
    if (context != null && broadcastReceiver != null) {
        if (mLocalBroadcastManager == null) {
            getLocalBroadcastManager(context.getApplicationContext());
        }/*from   w ww .j a v  a 2  s.c o  m*/
        mLocalBroadcastManager.unregisterReceiver(broadcastReceiver);
    }
}

From source file:Main.java

/**
 * Removes all cookies for this application.
 *//*  w  w w.j  a v  a 2 s . co  m*/
public static void removeAllCookies(Context context) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        removeAllCookiesV21();
    } else {
        removeAllCookiesV14(context.getApplicationContext());
    }
}

From source file:ee.ria.DigiDoc.util.FileUtils.java

private static File getCacheDir(Context context) {
    return context.getApplicationContext().getCacheDir();
}

From source file:ee.ria.DigiDoc.util.FileUtils.java

private static File getFilesDir(Context context) {
    return context.getApplicationContext().getFilesDir();
}

From source file:Main.java

/**
 * Return file size from Uri//from w  w  w .  j ava  2s . c o  m
 *
 * @param uri file URI
 * @return return file size
 */
public static long getFileSizeFromUri(Context context, Uri uri) {
    long size = 0;
    if (uri.getScheme().toString().compareTo("content") == 0) {
        Cursor cursor = null;
        try {
            cursor = context.getApplicationContext().getContentResolver().query(uri, null, null, null, null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.SIZE);
                size = cursor.getInt(column_index);
            }
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
    } else if (uri.getScheme().toString().compareTo("file") == 0) {
        final File file = new File(uri.getPath());
        size = file.length();
    }
    return size;
}

From source file:Main.java

private static void startActivityByResolve(Context context, ResolveInfo r, Intent intent) {
    Intent intent2 = new Intent(intent);
    intent2.setClassName(r.activityInfo.packageName, r.activityInfo.name);
    intent2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    context.getApplicationContext().startActivity(intent2);
}

From source file:Main.java

public static boolean areNotificationsEnabled(Context context) {
    AppOpsManager appOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
    ApplicationInfo appInfo = context.getApplicationInfo();
    String pkg = context.getApplicationContext().getPackageName();
    int uid = appInfo.uid;
    try {// w  ww .j ava2 s  .  c  o  m
        Class<?> appOpsClass = Class.forName(AppOpsManager.class.getName());
        Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE,
                String.class);
        Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);
        int value = (Integer) opPostNotificationValue.get(Integer.class);
        return ((Integer) checkOpNoThrowMethod.invoke(appOps, value, uid, pkg) == AppOpsManager.MODE_ALLOWED);
    } catch (ClassNotFoundException | NoSuchMethodException | NoSuchFieldException | InvocationTargetException
            | IllegalAccessException | RuntimeException e) {
        return true;
    }
}

From source file:com.pursuer.reader.easyrss.Utils.java

public static void initManagers(final Context context) {
    if (DataMgr.getInstance() == null) {
        DataMgr.init(context.getApplicationContext());
    }/*from   ww  w.j a v a  2  s .c  om*/
    if (NetworkMgr.getInstance() == null) {
        NetworkMgr.init(context.getApplicationContext());
    }
    if (ReaderAccountMgr.getInstance() == null) {
        ReaderAccountMgr.init(context.getApplicationContext());
    }
    if (NotificationMgr.getInstance() == null) {
        NotificationMgr.init(context.getApplicationContext());
    }
    if (GoogleAnalyticsMgr.getInstance() == null) {
        GoogleAnalyticsMgr.init(context.getApplicationContext());
        GoogleAnalyticsMgr.getInstance().startTracking();
    }
}

From source file:Main.java

/**
 * Return file display name from Uri//from www . ja v a  2s .c om
 *
 * @param context Context
 * @param uri URI of the file
 * @return return file display name
 */
public static String getFileDisplayNameFromUri(Context context, Uri uri) {
    String displayName = "";
    if (uri.getScheme().toString().compareTo("content") == 0) {
        Cursor cursor = null;
        try {
            cursor = context.getApplicationContext().getContentResolver().query(uri, null, null, null, null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DISPLAY_NAME);
                displayName = cursor.getString(column_index);
            }
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
    } else if (uri.getScheme().toString().compareTo("file") == 0) {
        final File file = new File(uri.getPath());
        displayName = file.getName();
    }
    return displayName;
}