Source link: https://github.com/danialgoodwin/android--one-time-alert-dialog

OneTimeAlertDialog

Android AlertDialog that only shows once for a given string.

This is a subclass of AlertDialog with all its features supported. The only difference is that a key is provided in its initialization, which is used to check the default SharedPreferences and save itself once shown.

Use cases

Show your app's recent updates prompt just once per version name.
Show a "rate now" prompt just once.
Quickly create a randomly shown message without worrying about the preferences.

Usage

First, copy OneTimeAlertDialog.java to your project. Then, do something similar to the following.

Simple case

OneTimeAlertDialog.Builder(this, "my_dialog_key")

.setTitle("My Title")

.setMessage("My Message")

.show();

Show recent updates prompt just once per version name

/** Show the recent updates prompt once per version. */ public static void showRecentUpdateOnce(Activity activity) {

  OneTimeAlertDialog.Builder(activity, "recent_updates_dialog" + BuildConfig.VERSION_NAME)

 .setTitle(activity.getString(R.string.recent_updates_title))

 .setMessage(activity.getString(R.string.recent_updates_message))

 .show();
 
}

Show a "rate now" prompt just once

public static void showRateDialogOnce(final Activity activity) {

  OneTimeAlertDialog.Builder(activity, "rate_dialog")

 .setTitle("One-time message")

 .setMessage("If you like me, rate me. ;)")

 .setPositiveButton("Rate", new DialogInterface.OnClickListener() {

  public void onClick(DialogInterface dialog, int whichButton) {

Uri uri = Uri.parse("market://details?id=" + activity.getPackageName());

activity.startActivity(new Intent(Intent.ACTION_VIEW, uri));

  
}

 
}
)

 .setNegativeButton("Not now", null)

 .show();
 
}

Limitations

show() always returns null (rather than the AlertDialog).
Do NOT directly call create() for OneTimeAlertDialog.Builder. Otherwise a regular AlertDialog without a prefsKey will be returned, thus show() wouldn't be limited.

These two (small) limitations were allowed as a tradeoff to keep the code vastly simplified, smaller, and more future-proof. These two issues are from extending AlertDialog.Builder for OneTimeAlertDialog.Builder. So, calling create() creates a regular AlertDialog instead of a OneTimeAlertDialog. And, show() calls create() internally, so it would only return a regular AlertDialog also. So, it was chosen to always return null, especially since I've never reused the AlertDialog for the one-time prompts. One way around these limitations is to recreate the entire AlertDialog.Builder (basically a large copy+paste), but I didn't find that worth the tradeoffs.

Having said that, if you know a simple way to hide these limitations from the public API, then I'd be happy to learn and fix it!

License

/**  * The MIT License (MIT)  *  * Copyright (c) 2015 Danial Goodwin  *  * Permission is hereby granted, free of charge, to any person obtaining a copy  * of this software and associated documentation files (the "Software"), to deal  * in the Software without restriction, including without limitation the rights  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell  * copies of the Software, and to permit persons to whom the Software is  * furnished to do so, subject to the following conditions:  *  * The above copyright notice and this permission notice shall be included in all  * copies or substantial portions of the Software.  *  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE  * SOFTWARE.  */

Source link: https://github.com/danialgoodwin/android--one-time-alert-dialog

Resources

OneTimeAlertDialog