| 本帖最后由 cj6585256 于 2013-6-20 13:31 编辑 protected static boolean isTopActivity(Activity activity){
String packageName = "xxxxx";
ActivityManager activityManager = (ActivityManager) activity.getSystemService(Context.ACTIVITY_SERVICE);
List<RunningTaskInfo> tasksInfo = activityManager.getRunningTasks(1);
if(tasksInfo.size() > 0){
System.out.println("---------------包名-----------"+tasksInfo.get(0).topActivity.getPackageName());
//应用程序位于堆栈的顶层
if(packageName.equals(tasksInfo.get(0).topActivity.getPackageName())){
return true;
}
}
return false;
}
记得添加权限：permission.GET_TASKS |
PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE);
pm.isScreenOn()
package com.chexiaodi.location; import java.util.List; import android.app.Activity; import android.app.ActivityManager; import android.app.ActivityManager.RunningTaskInfo; import android.content.Context; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.os.PowerManager; import android.util.Log; import android.widget.Toast; import com.baidu.location.BDLocation; import com.baidu.location.BDLocationListener; import com.baidu.location.LocationClient; import com.baidu.location.LocationClientOption; import com.chexiaodi.android.cxd.Constands; import com.chexiaodi.android.cxd.MyApplication; public class LocationHelper implements LocationListener, BDLocationListener { private static final long MINTIME = 3000; private static final float MINDISTANCE = 0.0f; private static final boolean DEBUG_TOAST = true; private Context mContext; private LocationManager mLocationManager; private Location savedLocation; private BDLocation savedBaiduLocation; private LocationClient mBDLocationClient; private static LocationHelper mInstance = null; private static LocationClientOption option; private static String packageName; private LocationHelper(Context c) { this.mContext = c; option = new LocationClientOption(); option.setOpenGps(true); option.setAddrType("all");// 返回的定位结果包含地址信息 option.setCoorType("bd09ll");// 返回的定位结果是百度经纬度,默认值gcj02 option.setScanSpan(5000);// 设置发起定位请求的间隔时间为5000ms option.disableCache(true);// 禁止启用缓存定位 option.setPoiNumber(5); // 最多返回POI个数 option.setProdName("CheXiaoDi"); option.setPoiDistance(1000); // poi查询距离 option.setPoiExtraInfo(true); // 是否需要POI的电话和地址等详细信息 mBDLocationClient = new LocationClient(mContext); mBDLocationClient.setLocOption(option); mBDLocationClient.registerLocationListener(this); } public synchronized static LocationHelper fromContext(Context c) { if (mInstance == null) mInstance = new LocationHelper(c); return mInstance; } /** * get the current location of device * * @return */ public Location getCurrentLocation() { if (savedLocation == null) { Criteria c = new Criteria(); c.setAccuracy(Criteria.ACCURACY_FINE); c.setAltitudeRequired(false); c.setBearingRequired(false); c.setCostAllowed(false); String provider = mLocationManager.getBestProvider(c, true); savedLocation = mLocationManager.getLastKnownLocation(provider); packageName = Constands.Package_NAME; } return savedLocation; } /** * check whether GPS is provided by device * * @return */ public boolean isGPSProvided() { if (mLocationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) { return true; } return false; } /** * check whether GPS is currently enabled. * * @return */ public boolean isGPSEnabled() { return this.isGPSProvided(); } @Override public void onLocationChanged(Location location) { this.savedLocation = location; android.util.Log.i("GPS", "onLocationChanged : " + location); if (DEBUG_TOAST) Toast.makeText(mContext, "Location =" + location.toString(), Toast.LENGTH_LONG).show(); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { android.util.Log.i("GPS", "onStatusChanged : " + provider); } @Override public void onProviderEnabled(String provider) { android.util.Log.i("GPS", "onProviderEnabled : " + provider); } @Override public void onProviderDisabled(String provider) { android.util.Log.i("GPS", "onProviderDisabled : " + provider); } /***************************************************************/ /************************** 百度地图位置信息回调 ************************/ /***************************************************************/ @Override public void onReceiveLocation(BDLocation location) { if (location == null) return; StringBuffer sb = new StringBuffer(256); sb.append("time : "); sb.append(location.getTime()); sb.append(" error code : "); sb.append(location.getLocType()); sb.append(" latitude : "); sb.append(location.getLatitude()); sb.append(" lontitude : "); sb.append(location.getLongitude()); sb.append(" radius : "); sb.append(location.getRadius()); if (location.getLocType() == BDLocation.TypeGpsLocation) { sb.append(" speed : "); sb.append(location.getSpeed()); sb.append(" satellite : "); sb.append(location.getSatelliteNumber()); } else if (location.getLocType() == BDLocation.TypeNetWorkLocation) { sb.append(" addr : "); sb.append(location.getAddrStr()); } savedBaiduLocation = location; // stopBaiduLocation(); //一次定位之后关闭定位动能 } @Override public void onReceivePoi(BDLocation arg0) { } private void logMsg(String log) { android.util.Log.d("GPS", log); } public void startBaiduLocation() { Log.i("0726inHELPER", "STARTBAIDU"); if (!mBDLocationClient.isStarted()) { mBDLocationClient.start(); // 如果还没开启定位则开启 } if (mBDLocationClient != null && mBDLocationClient.isStarted()) { mBDLocationClient.requestLocation(); } else { } } public void stopBaiduLocation( ) { Log.i("07240726inHELPER","stopbaidu, appNotOnTop=="+String.valueOf(isScreenOff())); //综合判断,如果判断出认为程序在使用则不停baiduLoc if(mBDLocationClient.isStarted()&&(appNotOnTop()||isScreenOff())) { Log.d("07260724inHELPER","stopbaidu, appNotOnTop=="+String.valueOf(appNotOnTop())); mBDLocationClient.unRegisterLocationListener(this); mBDLocationClient.stop(); } } public BDLocation getLocationFromBaiduLoc() { return savedBaiduLocation; } public boolean isScreenOff(){ PowerManager pm = (PowerManager)mContext.getSystemService(Context.POWER_SERVICE); return !(pm.isScreenOn()); } public boolean appNotOnTop(){ ActivityManager manager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE); List<RunningTaskInfo> runningTaskInfos = manager.getRunningTasks(100); if(runningTaskInfos.size() > 0){ System.out.println("---------------包名-----------"+runningTaskInfos.get(0).topActivity.getPackageName()); //应用程序位于堆栈的顶层 if("com.chexiaodi.android.cxd".equals(runningTaskInfos.get(0).topActivity.getPackageName())){ return false; } } return true; } }