1.打开android的gps
Intent intent = new Intent();
intent.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
intent.addCategory("android.intent.category.ALTERNATIVE");
intent.setData(Uri.parse("custom:3"));
context.sendBroadcast(intent);//或者PendingIntent.getBroadcast(this, 0, Intent, 0).send();
另外一种方式：适合2.2以上机器
Settings.Secure.setLocationProviderEnabled(getContentResolver(),LocationManager.GPS_PROVIDER, true);