Java tutorial
/* * Copyright 2009 Cedric Priscal * * 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. */ package com.hwx.wheel.steeringwheel; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.support.v4.content.LocalBroadcastManager; import com.hwx.wheel.steeringwheel.bluetooth.ScaleActivity; import java.io.File; import java.util.concurrent.TimeUnit; public class Application extends android.app.Application implements Thread.UncaughtExceptionHandler { @Override public void uncaughtException(Thread thread, Throwable throwable) { Intent intent = new Intent(this, ScaleActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); } public static Context mContext; private static Application _instance; public static Application getInstance() { return _instance; } public static Context getContext() { return mContext; } @Override public void onCreate() { super.onCreate(); _instance = this; mContext = this; AppConfig.getInstance(); } /** * ? dp ?? ? px(?) */ public static int dip2px(float dpValue) { final float scale = getContext().getResources().getDisplayMetrics().density; return (int) (dpValue * scale + 0.5f); } /** * ? px(?) ?? ? dp */ public static int px2dip(float pxValue) { final float scale = getContext().getResources().getDisplayMetrics().density; return (int) (pxValue / scale + 0.5f); } public static void sendLocalBroadCast(String action) { sendLocalBroadCast(action, null); } public static void sendLocalBroadCast(String action, Bundle bundle) { Intent bi = new Intent(); bi.setAction(action); if (bundle != null) bi.putExtras(bundle); LocalBroadcastManager.getInstance(getContext()).sendBroadcast(bi); } }