Java tutorial
//package com.java2s; /*Copyright 2015 TommyLemon(https://github.com/TommyLemon) Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.*/ import android.app.Activity; import android.app.ProgressDialog; import android.util.Log; public class Main { private static final String TAG = "CommonUtil"; private static ProgressDialog progressDialog = null; public static void showProgressDialog(Activity context, int stringResId) { try { showProgressDialog(context, null, context.getResources().getString(stringResId)); } catch (Exception e) { Log.e(TAG, "showProgressDialog showProgressDialog(Context context, null, context.getResources().getString(stringResId));"); } } public void showProgressDialog(Activity context, String dialogMessage) { showProgressDialog(context, null, dialogMessage); } public static void showProgressDialog(final Activity context, final String dialogTitle, final String dialogMessage) { if (context == null) { return; } context.runOnUiThread(new Runnable() { @Override public void run() { if (progressDialog == null) { progressDialog = new ProgressDialog(context); } if (progressDialog.isShowing() == true) { progressDialog.dismiss(); } if (dialogTitle != null && !"".equals(dialogTitle.trim())) { progressDialog.setTitle(dialogTitle); } if (dialogMessage != null && !"".equals(dialogMessage.trim())) { progressDialog.setMessage(dialogMessage); } progressDialog.setCanceledOnTouchOutside(false); progressDialog.show(); } }); } }