[+] Add DialogUtils class for displaying different dialogs

android-utils/src/main/java/github/nisrulz/androidutils/dialog/DialogUtils.java

@@ -0,0 +1,178 @@
+package github.nisrulz.androidutils.dialog;
+
+/**
+ * Created by Pranay.
+ */
+
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.ProgressDialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.graphics.drawable.Drawable;
+import android.text.TextUtils;
+
+public class DialogUtils {
+
+    private static final String TAG = "DialogUtils";
+    private static ProgressDialog mProgressDialog;
+
+    /**
+     * Shows a progress dialog with a spinning animation in it. This method must preferably called
+     * from a UI thread.
+     *
+     * @param ctx           Activity context
+     * @param title         Title of the progress dialog
+     * @param body          Body/Message to be shown in the progress dialog
+     * @param isCancellable True if the dialog can be cancelled on back button press, false otherwise
+     */
+    public static void showProgressDialog(Context ctx, String title, String body, boolean isCancellable) {
+        showProgressDialog(ctx, title, body, null, isCancellable);
+    }
+
+    /**
+     * Shows a progress dialog with a spinning animation in it. This method must preferably called
+     * from a UI thread.
+     *
+     * @param ctx           Activity context
+     * @param title         Title of the progress dialog
+     * @param body          Body/Message to be shown in the progress dialog
+     * @param icon          Icon to show in the progress dialog. It can be null.
+     * @param isCancellable True if the dialog can be cancelled on back button press, false otherwise
+     */
+    public static void showProgressDialog(Context ctx, String title, String body, Drawable icon, boolean isCancellable) {
+
+        if (ctx instanceof Activity) {
+            if (!((Activity) ctx).isFinishing()) {
+                mProgressDialog = ProgressDialog.show(ctx, title, body, true);
+                mProgressDialog.setIcon(icon);
+                mProgressDialog.setCancelable(isCancellable);
+            }
+        }
+    }
+
+    /**
+     * Check if the {@link ProgressDialog} is visible in the UI.
+     */
+    public static boolean isProgressDialogVisible() {
+        return (mProgressDialog != null);
+    }
+
+    /**
+     * Dismiss the progress dialog if it is visible.
+     */
+    public static void dismissProgressDialog() {
+
+        if (mProgressDialog != null) {
+            mProgressDialog.dismiss();
+        }
+
+        mProgressDialog = null;
+    }
+
+    /**
+     * Shows an alert dialog with the OK button. When the user presses OK button, the dialog
+     * dismisses.
+     */
+    public static void showAlertDialog(Context ctx, String title, String body) {
+        showAlertDialog(ctx, title, body, null);
+    }
+
+    /**
+     * Shows an alert dialog with OK button
+     */
+    public static void showAlertDialog(Context ctx, String title, String body, DialogInterface.OnClickListener okListener) {
+
+        if (okListener == null) {
+            okListener = new DialogInterface.OnClickListener() {
+
+                public void onClick(DialogInterface dialog, int which) {
+                    dialog.cancel();
+                }
+            };
+        }
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(ctx).setMessage(body).setPositiveButton("OK", okListener);
+
+        if (!TextUtils.isEmpty(title)) {
+            builder.setTitle(title);
+        }
+
+        builder.show();
+    }
+
+    /**
+     * Creates a confirmation dialog with Yes-No Button. By default the buttons just dismiss the
+     * dialog.
+     *
+     * @param ctx
+     * @param message     Message to be shown in the dialog.
+     * @param yesListener Yes click handler
+     * @param noListener  **
+     */
+    public static void showConfirmDialog(Context ctx, String message, DialogInterface.OnClickListener yesListener, DialogInterface.OnClickListener noListener) {
+        showConfirmDialog(ctx, message, yesListener, noListener, "Yes", "No", true);
+    }
+
+    /**
+     * Creates a confirmation dialog with Yes-No Button. By default the buttons just dismiss the
+     * dialog.
+     *
+     * @param ctx
+     * @param message     Message to be shown in the dialog.
+     * @param yesListener Yes click handler
+     * @param noListener
+     * @param yesLabel    Label for yes button
+     * @param noLabel     Label for no button
+     */
+    public static void showConfirmDialog(Context ctx, String message, DialogInterface.OnClickListener yesListener, DialogInterface.OnClickListener noListener, String yesLabel, String noLabel, boolean isCancelable) {
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(ctx);
+
+        if (yesListener == null) {
+            yesListener = new DialogInterface.OnClickListener() {
+
+                @Override
+                public void onClick(DialogInterface dialog, int which) {
+                    dialog.dismiss();
+                }
+            };
+        }
+
+        if (noListener == null) {
+            noListener = new DialogInterface.OnClickListener() {
+
+                public void onClick(DialogInterface dialog, int which) {
+                    dialog.dismiss();
+                }
+            };
+        }
+
+        builder.setCancelable(isCancelable);
+        builder.setMessage(message).setPositiveButton(yesLabel, yesListener).setNegativeButton(noLabel, noListener).show();
+    }
+
+    /**
+     * Creates a confirmation dialog that show a pop-up with button labeled as parameters labels.
+     *
+     * @param ctx                 {@link Activity} {@link Context}
+     * @param message             Message to be shown in the dialog.
+     * @param dialogClickListener For e.g.
+     *                            <p/>
+     * @param positiveBtnLabel    For e.g. "Yes"
+     * @param negativeBtnLabel    For e.g. "No"
+     */
+    public static void showDialog(Context ctx, String message, String positiveBtnLabel, String negativeBtnLabel, DialogInterface.OnClickListener dialogClickListener) {
+
+        if (dialogClickListener == null) {
+            throw new NullPointerException("Action listener cannot be null");
+        }
+
+        AlertDialog.Builder builder = new AlertDialog.Builder(ctx);
+
+        builder.setMessage(message).setPositiveButton(positiveBtnLabel, dialogClickListener).setNegativeButton(negativeBtnLabel, dialogClickListener).show();
+    }
+
+}
+