com.nalinstudios.iscan

Class MainActivity

java.lang.Object

android.content.Context

android.content.ContextWrapper

android.view.ContextThemeWrapper

android.app.Activity

androidx.core.app.ComponentActivity

androidx.activity.ComponentActivity

androidx.fragment.app.FragmentActivity

androidx.appcompat.app.AppCompatActivity

com.nalinstudios.iscan.MainActivity

All Implemented Interfaces:

android.content.ComponentCallbacks, android.content.ComponentCallbacks2, android.view.KeyEvent.Callback, android.view.LayoutInflater.Factory, android.view.LayoutInflater.Factory2, android.view.View.OnCreateContextMenuListener, android.view.Window.Callback, androidx.activity.OnBackPressedDispatcherOwner, androidx.appcompat.app.ActionBarDrawerToggle.DelegateProvider, androidx.appcompat.app.AppCompatCallback, androidx.core.app.ActivityCompat.OnRequestPermissionsResultCallback, androidx.core.app.ActivityCompat.RequestPermissionsRequestCodeValidator, androidx.core.app.TaskStackBuilder.SupportParentable, androidx.core.view.KeyEventDispatcher.Component, androidx.lifecycle.HasDefaultViewModelProviderFactory, androidx.lifecycle.LifecycleOwner, androidx.lifecycle.ViewModelStoreOwner, androidx.savedstate.SavedStateRegistryOwner

public class MainActivity
extends androidx.appcompat.app.AppCompatActivity

Main Activity (The name tells you). It will make the main list of all the PDFs created till now and will provide access to the other activities.

Author:

Nalin Angrish.

Nested Class Summary

Nested classes/interfaces inherited from class androidx.core.app.ComponentActivity

androidx.core.app.ComponentActivity.ExtraData

Field Summary

Fields inherited from class android.app.Activity

DEFAULT_KEYS_DIALER, DEFAULT_KEYS_DISABLE, DEFAULT_KEYS_SEARCH_GLOBAL, DEFAULT_KEYS_SEARCH_LOCAL, DEFAULT_KEYS_SHORTCUT, FOCUSED_STATE_SET, RESULT_CANCELED, RESULT_FIRST_USER, RESULT_OK

Fields inherited from class android.content.Context

ACCESSIBILITY_SERVICE, ACCOUNT_SERVICE, ACTIVITY_SERVICE, ALARM_SERVICE, APP_OPS_SERVICE, APPWIDGET_SERVICE, AUDIO_SERVICE, BATTERY_SERVICE, BIND_ABOVE_CLIENT, BIND_ADJUST_WITH_ACTIVITY, BIND_ALLOW_OOM_MANAGEMENT, BIND_AUTO_CREATE, BIND_DEBUG_UNBIND, BIND_EXTERNAL_SERVICE, BIND_IMPORTANT, BIND_INCLUDE_CAPABILITIES, BIND_NOT_FOREGROUND, BIND_NOT_PERCEPTIBLE, BIND_WAIVE_PRIORITY, BIOMETRIC_SERVICE, BLUETOOTH_SERVICE, CAMERA_SERVICE, CAPTIONING_SERVICE, CARRIER_CONFIG_SERVICE, CLIPBOARD_SERVICE, COMPANION_DEVICE_SERVICE, CONNECTIVITY_SERVICE, CONSUMER_IR_SERVICE, CONTEXT_IGNORE_SECURITY, CONTEXT_INCLUDE_CODE, CONTEXT_RESTRICTED, CROSS_PROFILE_APPS_SERVICE, DEVICE_POLICY_SERVICE, DISPLAY_SERVICE, DOWNLOAD_SERVICE, DROPBOX_SERVICE, EUICC_SERVICE, FINGERPRINT_SERVICE, HARDWARE_PROPERTIES_SERVICE, INPUT_METHOD_SERVICE, INPUT_SERVICE, IPSEC_SERVICE, JOB_SCHEDULER_SERVICE, KEYGUARD_SERVICE, LAUNCHER_APPS_SERVICE, LAYOUT_INFLATER_SERVICE, LOCATION_SERVICE, MEDIA_PROJECTION_SERVICE, MEDIA_ROUTER_SERVICE, MEDIA_SESSION_SERVICE, MIDI_SERVICE, MODE_APPEND, MODE_ENABLE_WRITE_AHEAD_LOGGING, MODE_MULTI_PROCESS, MODE_NO_LOCALIZED_COLLATORS, MODE_PRIVATE, MODE_WORLD_READABLE, MODE_WORLD_WRITEABLE, NETWORK_STATS_SERVICE, NFC_SERVICE, NOTIFICATION_SERVICE, NSD_SERVICE, POWER_SERVICE, PRINT_SERVICE, RECEIVER_VISIBLE_TO_INSTANT_APPS, RESTRICTIONS_SERVICE, ROLE_SERVICE, SEARCH_SERVICE, SENSOR_SERVICE, SHORTCUT_SERVICE, STORAGE_SERVICE, STORAGE_STATS_SERVICE, SYSTEM_HEALTH_SERVICE, TELECOM_SERVICE, TELEPHONY_SERVICE, TELEPHONY_SUBSCRIPTION_SERVICE, TEXT_CLASSIFICATION_SERVICE, TEXT_SERVICES_MANAGER_SERVICE, TV_INPUT_SERVICE, UI_MODE_SERVICE, USAGE_STATS_SERVICE, USB_SERVICE, USER_SERVICE, VIBRATOR_SERVICE, WALLPAPER_SERVICE, WIFI_AWARE_SERVICE, WIFI_P2P_SERVICE, WIFI_RTT_RANGING_SERVICE, WIFI_SERVICE, WINDOW_SERVICE

Fields inherited from interface android.content.ComponentCallbacks2

TRIM_MEMORY_BACKGROUND, TRIM_MEMORY_COMPLETE, TRIM_MEMORY_MODERATE, TRIM_MEMORY_RUNNING_CRITICAL, TRIM_MEMORY_RUNNING_LOW, TRIM_MEMORY_RUNNING_MODERATE, TRIM_MEMORY_UI_HIDDEN

Constructor Summary

Constructors

Constructor and Description
MainActivity()

Method Summary

Modifier and Type	Method and Description
protected void	askPermissions() A function to check whether all permissions are given and if not, then ask.
protected void	clear() A function to clear all entries of the PDFs in the main window.
void	onBackPressed() This function will take to the home screen instead of the previous activity if the user has came here after clicking the PDF.
protected void	onCreate(android.os.Bundle savedInstanceState) The on create method of MainActivity.
boolean	onCreateOptionsMenu(android.view.Menu menu) A function to inflate the menu on the main screen for letting the User do some things like viewing the manual or the privacy policy of the app.
void	onRequestPermissionsResult(int requestCode, java.lang.String[] permissions, int[] grantResults) A function to know whether the permissions requested have been granted.
void	onResume() This function will create all the CardLayouts for the PDFs.
java.io.File[]	reverseArray(java.io.File[] arr) A function to reverse an array of files

Methods inherited from class androidx.appcompat.app.AppCompatActivity

addContentView, attachBaseContext, closeOptionsMenu, dispatchKeyEvent, findViewById, getDelegate, getDrawerToggleDelegate, getMenuInflater, getResources, getSupportActionBar, getSupportParentActivityIntent, invalidateOptionsMenu, onConfigurationChanged, onContentChanged, onCreateSupportNavigateUpTaskStack, onDestroy, onKeyDown, onMenuItemSelected, onMenuOpened, onNightModeChanged, onPanelClosed, onPostCreate, onPostResume, onPrepareSupportNavigateUpTaskStack, onSaveInstanceState, onStart, onStop, onSupportActionModeFinished, onSupportActionModeStarted, onSupportContentChanged, onSupportNavigateUp, onTitleChanged, onWindowStartingSupportActionMode, openOptionsMenu, setContentView, setContentView, setContentView, setSupportActionBar, setSupportProgress, setSupportProgressBarIndeterminate, setSupportProgressBarIndeterminateVisibility, setSupportProgressBarVisibility, setTheme, startSupportActionMode, supportInvalidateOptionsMenu, supportNavigateUpTo, supportRequestWindowFeature, supportShouldUpRecreateTask

Methods inherited from class androidx.fragment.app.FragmentActivity

dump, getSupportFragmentManager, getSupportLoaderManager, onActivityResult, onAttachFragment, onCreatePanelMenu, onCreateView, onCreateView, onLowMemory, onMultiWindowModeChanged, onNewIntent, onPause, onPictureInPictureModeChanged, onPrepareOptionsPanel, onPreparePanel, onResumeFragments, onStateNotSaved, setEnterSharedElementCallback, setExitSharedElementCallback, startActivityForResult, startActivityForResult, startActivityFromFragment, startActivityFromFragment, startIntentSenderForResult, startIntentSenderForResult, startIntentSenderFromFragment, supportFinishAfterTransition, supportPostponeEnterTransition, supportStartPostponedEnterTransition, validateRequestPermissionsRequestCode

Methods inherited from class androidx.activity.ComponentActivity

getDefaultViewModelProviderFactory, getLastCustomNonConfigurationInstance, getLifecycle, getOnBackPressedDispatcher, getSavedStateRegistry, getViewModelStore, onRetainCustomNonConfigurationInstance, onRetainNonConfigurationInstance

Methods inherited from class androidx.core.app.ComponentActivity

dispatchKeyShortcutEvent, getExtraData, putExtraData, superDispatchKeyEvent

Methods inherited from class android.app.Activity

closeContextMenu, createPendingResult, dismissDialog, dismissKeyboardShortcutsHelper, dispatchGenericMotionEvent, dispatchPopulateAccessibilityEvent, dispatchTouchEvent, dispatchTrackballEvent, enterPictureInPictureMode, enterPictureInPictureMode, finish, finishActivity, finishActivityFromChild, finishAffinity, finishAfterTransition, finishAndRemoveTask, finishFromChild, getActionBar, getApplication, getCallingActivity, getCallingPackage, getChangingConfigurations, getComponentName, getContentScene, getContentTransitionManager, getCurrentFocus, getFragmentManager, getIntent, getLastNonConfigurationInstance, getLayoutInflater, getLoaderManager, getLocalClassName, getMaxNumPictureInPictureActions, getMediaController, getParent, getParentActivityIntent, getPreferences, getReferrer, getRequestedOrientation, getSearchEvent, getSystemService, getTaskId, getTitle, getTitleColor, getVoiceInteractor, getVolumeControlStream, getWindow, getWindowManager, hasWindowFocus, isActivityTransitionRunning, isChangingConfigurations, isChild, isDestroyed, isFinishing, isImmersive, isInMultiWindowMode, isInPictureInPictureMode, isLocalVoiceInteractionSupported, isTaskRoot, isVoiceInteraction, isVoiceInteractionRoot, managedQuery, moveTaskToBack, navigateUpTo, navigateUpToFromChild, onActionModeFinished, onActionModeStarted, onActivityReenter, onApplyThemeResource, onAttachedToWindow, onAttachFragment, onChildTitleChanged, onContextItemSelected, onContextMenuClosed, onCreate, onCreateContextMenu, onCreateDescription, onCreateDialog, onCreateDialog, onCreateNavigateUpTaskStack, onCreatePanelView, onCreateThumbnail, onDetachedFromWindow, onEnterAnimationComplete, onGenericMotionEvent, onGetDirectActions, onKeyLongPress, onKeyMultiple, onKeyShortcut, onKeyUp, onLocalVoiceInteractionStarted, onLocalVoiceInteractionStopped, onMultiWindowModeChanged, onNavigateUp, onNavigateUpFromChild, onOptionsItemSelected, onOptionsMenuClosed, onPerformDirectAction, onPictureInPictureModeChanged, onPostCreate, onPrepareDialog, onPrepareDialog, onPrepareNavigateUpTaskStack, onPrepareOptionsMenu, onProvideAssistContent, onProvideAssistData, onProvideKeyboardShortcuts, onProvideReferrer, onRestart, onRestoreInstanceState, onRestoreInstanceState, onSaveInstanceState, onSearchRequested, onSearchRequested, onTopResumedActivityChanged, onTouchEvent, onTrackballEvent, onTrimMemory, onUserInteraction, onUserLeaveHint, onVisibleBehindCanceled, onWindowAttributesChanged, onWindowFocusChanged, onWindowStartingActionMode, onWindowStartingActionMode, openContextMenu, overridePendingTransition, postponeEnterTransition, recreate, registerActivityLifecycleCallbacks, registerForContextMenu, releaseInstance, removeDialog, reportFullyDrawn, requestDragAndDropPermissions, requestPermissions, requestShowKeyboardShortcuts, requestVisibleBehind, requestWindowFeature, requireViewById, runOnUiThread, setActionBar, setContentTransitionManager, setDefaultKeyMode, setEnterSharedElementCallback, setExitSharedElementCallback, setFeatureDrawable, setFeatureDrawableAlpha, setFeatureDrawableResource, setFeatureDrawableUri, setFinishOnTouchOutside, setImmersive, setInheritShowWhenLocked, setIntent, setMediaController, setPictureInPictureParams, setProgress, setProgressBarIndeterminate, setProgressBarIndeterminateVisibility, setProgressBarVisibility, setRequestedOrientation, setResult, setResult, setSecondaryProgress, setShowWhenLocked, setTaskDescription, setTitle, setTitle, setTitleColor, setTurnScreenOn, setVisible, setVolumeControlStream, setVrModeEnabled, shouldShowRequestPermissionRationale, shouldUpRecreateTask, showAssist, showDialog, showDialog, showLockTaskEscapeMessage, startActionMode, startActionMode, startActivities, startActivities, startActivity, startActivity, startActivityFromChild, startActivityFromChild, startActivityFromFragment, startActivityFromFragment, startActivityIfNeeded, startActivityIfNeeded, startIntentSender, startIntentSender, startIntentSenderFromChild, startIntentSenderFromChild, startLocalVoiceInteraction, startLockTask, startManagingCursor, startNextMatchingActivity, startNextMatchingActivity, startPostponedEnterTransition, startSearch, stopLocalVoiceInteraction, stopLockTask, stopManagingCursor, takeKeyEvents, triggerSearch, unregisterActivityLifecycleCallbacks, unregisterForContextMenu

Methods inherited from class android.view.ContextThemeWrapper

applyOverrideConfiguration, getAssets, getTheme, setTheme

Methods inherited from class android.content.ContextWrapper

bindIsolatedService, bindService, bindService, checkCallingOrSelfPermission, checkCallingOrSelfUriPermission, checkCallingPermission, checkCallingUriPermission, checkPermission, checkSelfPermission, checkUriPermission, checkUriPermission, clearWallpaper, createConfigurationContext, createContextForSplit, createDeviceProtectedStorageContext, createDisplayContext, createPackageContext, databaseList, deleteDatabase, deleteFile, deleteSharedPreferences, enforceCallingOrSelfPermission, enforceCallingOrSelfUriPermission, enforceCallingPermission, enforceCallingUriPermission, enforcePermission, enforceUriPermission, enforceUriPermission, fileList, getApplicationContext, getApplicationInfo, getBaseContext, getCacheDir, getClassLoader, getCodeCacheDir, getContentResolver, getDatabasePath, getDataDir, getDir, getExternalCacheDir, getExternalCacheDirs, getExternalFilesDir, getExternalFilesDirs, getExternalMediaDirs, getFilesDir, getFileStreamPath, getMainExecutor, getMainLooper, getNoBackupFilesDir, getObbDir, getObbDirs, getOpPackageName, getPackageCodePath, getPackageManager, getPackageName, getPackageResourcePath, getSharedPreferences, getSystemServiceName, getWallpaper, getWallpaperDesiredMinimumHeight, getWallpaperDesiredMinimumWidth, grantUriPermission, isDeviceProtectedStorage, isRestricted, moveDatabaseFrom, moveSharedPreferencesFrom, openFileInput, openFileOutput, openOrCreateDatabase, openOrCreateDatabase, peekWallpaper, registerReceiver, registerReceiver, registerReceiver, registerReceiver, removeStickyBroadcast, removeStickyBroadcastAsUser, revokeUriPermission, revokeUriPermission, sendBroadcast, sendBroadcast, sendBroadcastAsUser, sendBroadcastAsUser, sendOrderedBroadcast, sendOrderedBroadcast, sendOrderedBroadcastAsUser, sendStickyBroadcast, sendStickyBroadcastAsUser, sendStickyOrderedBroadcast, sendStickyOrderedBroadcastAsUser, setWallpaper, setWallpaper, startForegroundService, startInstrumentation, startService, stopService, unbindService, unregisterReceiver, updateServiceGroup

Methods inherited from class android.content.Context

getColor, getColorStateList, getDrawable, getString, getString, getSystemService, getText, obtainStyledAttributes, obtainStyledAttributes, obtainStyledAttributes, obtainStyledAttributes, registerComponentCallbacks, unregisterComponentCallbacks

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface android.view.Window.Callback

onPointerCaptureChanged

Constructor Detail

MainActivity

public MainActivity()

Method Detail

askPermissions

protected void askPermissions()

A function to check whether all permissions are given and if not, then ask.

clear

protected void clear()

A function to clear all entries of the PDFs in the main window.

onBackPressed

public void onBackPressed()

This function will take to the home screen instead of the previous activity if the user has came here after clicking the PDF.

Overrides:

onBackPressed in class androidx.activity.ComponentActivity

onCreate

protected void onCreate(android.os.Bundle savedInstanceState)

The on create method of MainActivity.

Overrides:

onCreate in class androidx.appcompat.app.AppCompatActivity

Parameters:

savedInstanceState - The state of the saved instance. This state is not used.

onCreateOptionsMenu

public boolean onCreateOptionsMenu(android.view.Menu menu)

A function to inflate the menu on the main screen for letting the User do some things like viewing the manual or the privacy policy of the app.

Overrides:

onCreateOptionsMenu in class android.app.Activity

Parameters:

menu - The menu to be shown to the user.

Returns:

super's onCreateOptionsMenu

onRequestPermissionsResult

public void onRequestPermissionsResult(int requestCode,
                                       @NonNull
                                       java.lang.String[] permissions,
                                       @NonNull
                                       int[] grantResults)

A function to know whether the permissions requested have been granted. If not, then close the application because it cannot run without the permissions.

Specified by:

onRequestPermissionsResult in interface androidx.core.app.ActivityCompat.OnRequestPermissionsResultCallback

Overrides:

onRequestPermissionsResult in class androidx.fragment.app.FragmentActivity

Parameters:

requestCode - to check whether this is called due to our request or not

permissions - The permissions (array) that were requested

grantResults - the results (array) that we got

onResume

public void onResume()

This function will create all the CardLayouts for the PDFs.

Overrides:

onResume in class androidx.fragment.app.FragmentActivity

reverseArray

public java.io.File[] reverseArray(java.io.File[] arr)

A function to reverse an array of files

Parameters:

arr - the array to reverse

Returns:

the reversed array