We would like to know how to create various type of alert Dialog.
//www . j a v a 2s .c om import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.net.Uri; class Alerter { private static final int TYPE_ERROR = 0; private static final int TYPE_INFO = 1; public static void alertError(final Activity activity, final String msg) { alert(TYPE_ERROR, activity, msg); } public static void alertInfo(final Activity activity, final String msg) { alert(TYPE_INFO, activity, msg); } public static void alertInfo(final Activity activity, final String msg, final String buttontext, final String url) { alert(TYPE_INFO, activity, msg, buttontext, url); } private static void alert(final int typ, final Activity activity, final String msg) { alert(typ, activity, msg, null, null); } private static void alert(final int typ, final Activity activity, final String msg, final String buttontext, final String url) { final AlertDialog.Builder bld = new AlertDialog.Builder(activity); bld.setMessage(msg); if (typ == TYPE_ERROR) { bld.setIcon(android.R.drawable.ic_dialog_alert); bld.setTitle("Error"); } else { bld.setIcon(android.R.drawable.ic_dialog_info); bld.setTitle("Info"); } if (url != null && !url.isEmpty()) { bld.setNeutralButton(buttontext, new OnClickListener() { @Override public void onClick(final DialogInterface dialog, final int which) { final Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); activity.startActivity(intent); } }); } else { bld.setNeutralButton("OK", null); } bld.create().show(); } public static void alertYesNo(final Activity activity, final String msg, final String title, final DialogInterface.OnClickListener yesListener) { final AlertDialog.Builder builder = new AlertDialog.Builder(activity); builder.setTitle(title); builder.setMessage(msg); builder.setIcon(android.R.drawable.ic_menu_help); builder.setPositiveButton("YES", yesListener); builder.setNegativeButton("NO", new DialogInterface.OnClickListener() { @Override public void onClick(final DialogInterface dialog, final int which) { dialog.dismiss(); } }); final AlertDialog alert = builder.create(); alert.show(); } public static void alertYesNoUrgent(final Activity activity, final String msg, final String title, final DialogInterface.OnClickListener yesListener) { final AlertDialog.Builder builder = new AlertDialog.Builder(activity); builder.setTitle(title); builder.setMessage(msg); builder.setIcon(android.R.drawable.ic_dialog_alert); builder.setPositiveButton("YES", yesListener); builder.setNegativeButton("NO", new DialogInterface.OnClickListener() { @Override public void onClick(final DialogInterface dialog, final int which) { dialog.dismiss(); } }); final AlertDialog alert = builder.create(); alert.show(); } }