Java tutorial
/*####################################################### * * Maintained by Gregor Santner, 2016- * https://gsantner.net/ * * License of this file: Apache 2.0 (Commercial upon request) * https://www.apache.org/licenses/LICENSE-2.0 * https://github.com/gsantner/opoc/#licensing * #########################################################*/ package net.gsantner.opoc.util; import android.app.Activity; import android.content.ActivityNotFoundException; import android.content.ComponentName; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.content.pm.PackageManager; import android.net.Uri; import android.os.Build; import android.support.annotation.StringRes; import android.support.design.widget.Snackbar; import android.support.v4.content.ContextCompat; import android.support.v7.app.AlertDialog; import android.support.v7.widget.AppCompatTextView; import android.text.Html; import android.text.SpannableString; import android.text.method.LinkMovementMethod; import android.util.TypedValue; import android.view.View; import android.view.WindowManager; import android.view.inputmethod.InputMethodManager; import android.webkit.WebView; import android.widget.ScrollView; @SuppressWarnings({ "WeakerAccess", "unused", "SameParameterValue", "SpellCheckingInspection" }) public class ActivityUtils extends net.gsantner.opoc.util.ContextUtils { //######################## //## Members, Constructors //######################## protected Activity _activity; public ActivityUtils(final Activity activity) { super(activity); _activity = activity; } //######################## //## Methods //######################## /** * Animate to specified Activity * * @param to The class of the activity * @param finishFromActivity true: Finish the current activity * @param requestCode Request code for stating the activity, not waiting for result if null */ public void animateToActivity(Class to, Boolean finishFromActivity, Integer requestCode) { animateToActivity(new Intent(_activity, to), finishFromActivity, requestCode); } /** * Animate to Activity specified in intent * Requires animation resources * * @param intent Intent to open start an activity * @param finishFromActivity true: Finish the current activity * @param requestCode Request code for stating the activity, not waiting for result if null */ public void animateToActivity(Intent intent, Boolean finishFromActivity, Integer requestCode) { intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); if (requestCode != null) { _activity.startActivityForResult(intent, requestCode); } else { _activity.startActivity(intent); } _activity.overridePendingTransition(getResId(ResType.DIMEN, "fadein"), getResId(ResType.DIMEN, "fadeout")); if (finishFromActivity != null && finishFromActivity) { _activity.finish(); } } public void showSnackBar(@StringRes int stringResId, boolean showLong) { Snackbar.make(_activity.findViewById(android.R.id.content), stringResId, showLong ? Snackbar.LENGTH_LONG : Snackbar.LENGTH_SHORT).show(); } public void showSnackBar(@StringRes int stringResId, boolean showLong, @StringRes int actionResId, View.OnClickListener listener) { Snackbar.make(_activity.findViewById(android.R.id.content), stringResId, showLong ? Snackbar.LENGTH_LONG : Snackbar.LENGTH_SHORT).setAction(actionResId, listener).show(); } public void hideSoftKeyboard() { InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE); if (imm != null && _activity.getCurrentFocus() != null && _activity.getCurrentFocus().getWindowToken() != null) { imm.hideSoftInputFromWindow(_activity.getCurrentFocus().getWindowToken(), 0); } } public void showSoftKeyboard() { InputMethodManager imm = (InputMethodManager) _activity.getSystemService(Activity.INPUT_METHOD_SERVICE); if (imm != null && _activity.getCurrentFocus() != null && _activity.getCurrentFocus().getWindowToken() != null) { imm.showSoftInput(_activity.getCurrentFocus(), InputMethodManager.SHOW_FORCED); } } public void showDialogWithHtmlTextView(@StringRes int resTitleId, String html) { showDialogWithHtmlTextView(resTitleId, html, true, null); } public void showDialogWithHtmlTextView(@StringRes int resTitleId, String text, boolean isHtml, DialogInterface.OnDismissListener dismissedListener) { ScrollView scroll = new ScrollView(_context); AppCompatTextView textView = new AppCompatTextView(_context); int padding = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 16, _context.getResources().getDisplayMetrics()); scroll.setPadding(padding, 0, padding, 0); scroll.addView(textView); textView.setMovementMethod(new LinkMovementMethod()); textView.setText(isHtml ? new SpannableString(Html.fromHtml(text)) : text); AlertDialog.Builder dialog = new AlertDialog.Builder(_context).setPositiveButton(android.R.string.ok, null) .setOnDismissListener(dismissedListener).setTitle(resTitleId).setView(scroll); dialog.show(); } public void showDialogWithRawFileInWebView(String fileInRaw, @StringRes int resTitleId) { WebView wv = new WebView(_context); wv.loadUrl("file:///android_res/raw/" + fileInRaw); AlertDialog.Builder dialog = new AlertDialog.Builder(_context).setPositiveButton(android.R.string.ok, null) .setTitle(resTitleId).setView(wv); dialog.show(); } // Toggle with no param, else set visibility according to first bool public void toggleStatusbarVisibility(boolean... optionalForceVisible) { WindowManager.LayoutParams attrs = _activity.getWindow().getAttributes(); int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN; if (optionalForceVisible.length == 0) { attrs.flags ^= flag; } else if (optionalForceVisible.length == 1 && optionalForceVisible[0]) { attrs.flags &= ~flag; } else { attrs.flags |= flag; } _activity.getWindow().setAttributes(attrs); } public void showGooglePlayEntryForThisApp() { String pkgId = "details?id=" + _activity.getPackageName(); Intent goToMarket = new Intent(Intent.ACTION_VIEW, Uri.parse("market://" + pkgId)); goToMarket .addFlags( Intent.FLAG_ACTIVITY_NO_HISTORY | (Build.VERSION.SDK_INT >= 21 ? Intent.FLAG_ACTIVITY_NEW_DOCUMENT : Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET) | Intent.FLAG_ACTIVITY_MULTIPLE_TASK); try { _activity.startActivity(goToMarket); } catch (ActivityNotFoundException e) { _activity.startActivity( new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/" + pkgId))); } } public void setStatusbarColor(int color, boolean... fromRes) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { if (fromRes != null && fromRes.length > 0 && fromRes[0]) { color = ContextCompat.getColor(_context, color); } _activity.getWindow().setStatusBarColor(color); } } public void setLauncherActivityEnabled(Class activityClass, boolean enable) { Context context = _context.getApplicationContext(); PackageManager pkg = context.getPackageManager(); ComponentName component = new ComponentName(context, activityClass); pkg.setComponentEnabledSetting(component, enable ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP); } }