PhoneStateListener怪怪的？ [英] PhoneStateListener acting weird?

问题描述

这是怎么回事奇怪的是当我听到所有的三种状态

1. LISTEN_CELL_INFO




2. LISTEN_CELL_LOCATION




3. LISTEN_SIGNAL_STRENGTHS

oncellInfoChanged（）和 onCellLocationChanged（）被在registeration的时间称为只有一次，我收到定期更新的 onSignalStrengthsChanged（）而已。但是，如果我评论 LISTEN_SIGNAL_STRENGTHS 其他两场比赛得到更新正常。任何人都可以指出问题呢？

 公共类GSMCellInfoListener {        TelephonyManager teleManager = NULL;
        上下文mContext;
        GSMCellInfoProvider mGsmCellInfoProvider;        公共GSMCellInfoListener（上下文CTX）{
            mContext = CTX;
            mGsmCellInfoProvider =新GSMCellInfoProvider（）;
        }        公共无效的addListener（）{
            teleManager =（TelephonyManager）mContext
                    .getSystemService（Context.TELEPHONY_SERVICE）;
            teleManager.listen（mGsmCellInfoProvider，
                    PhoneStateListener.LISTEN_CELL_INFO）;
            teleManager.listen（mGsmCellInfoProvider，
                    PhoneStateListener.LISTEN_CELL_LOCATION）;
            teleManager.listen（mGsmCellInfoProvider，
                    PhoneStateListener.LISTEN_SIGNAL_STRENGTHS）;
        }        公共无效的removeListener（）{
            teleManager
                    。听（mGsmCellInfoProvider，PhoneStateListener.LISTEN_NONE）;
        }        公共无效deleteListener（）{
            teleManager = NULL;
            mGsmCellInfoProvider = NULL;
        }        类GSMCellInfoProvider扩展PhoneStateListener {
            @覆盖
            公共无效onCellInfoChanged（列表＆LT; CellInfo＆GT; cellInfo）{
                super.onCellInfoChanged（cellInfo）;
            }            @覆盖
            公共无效onSignalStrengthsChanged（SignalStrength signalStrength）{
                super.onSignalStrengthsChanged（signalStrength）;
            }            @覆盖
            公共无效onCellLocationChanged（CellLocation位置）{
                super.onCellLocationChanged（位置）;
            }
        }
    }
 

解决方案

你试过注册的所有3个事件一次只有1监听？在内部，mGsmCellInfoProvider可以是地图或设置，所以不允许重复，造成后来的。听（...）调用覆盖前面的。

试试这个：

 公共无效的addListener（）{
        teleManager =（TelephonyManager）mContext
                .getSystemService（Context.TELEPHONY_SERVICE）;
        INT listenMask = PhoneStateListener.LISTEN_CELL_INFO +
                         PhoneStateListener.LISTEN_CELL_LOCATION +
                         PhoneStateListener.LISTEN_SIGNAL_STRENGTHS;
        teleManager.listen（mGsmCellInfoProvider，listenMask）;
    }
 

The weird thing that's happening is when i listen all the three states

1. LISTEN_CELL_INFO

2. LISTEN_CELL_LOCATION

3. LISTEN_SIGNAL_STRENGTHS

oncellInfoChanged() and onCellLocationChanged() gets called only once at the time of registeration and i receive regular updates of onSignalStrengthsChanged() only. However if i comment LISTEN_SIGNAL_STRENGTHS the other two starts getting updates properly. Can anyone point out the issue in this?

public class GSMCellInfoListener {

        TelephonyManager teleManager = null;
        Context mContext;
        GSMCellInfoProvider mGsmCellInfoProvider;

        public GSMCellInfoListener(Context ctx) {
            mContext = ctx;
            mGsmCellInfoProvider = new GSMCellInfoProvider();
        }

        public void addListener() {
            teleManager = (TelephonyManager) mContext
                    .getSystemService(Context.TELEPHONY_SERVICE);
            teleManager.listen(mGsmCellInfoProvider,
                    PhoneStateListener.LISTEN_CELL_INFO);
            teleManager.listen(mGsmCellInfoProvider,
                    PhoneStateListener.LISTEN_CELL_LOCATION);
            teleManager.listen(mGsmCellInfoProvider,
                    PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
        }

        public void removeListener() {
            teleManager
                    .listen(mGsmCellInfoProvider, PhoneStateListener.LISTEN_NONE);
        }

        public void deleteListener() {
            teleManager = null;
            mGsmCellInfoProvider = null;
        }

        class GSMCellInfoProvider extends PhoneStateListener {
            @Override
            public void onCellInfoChanged(List<CellInfo> cellInfo) {
                super.onCellInfoChanged(cellInfo);
            }

            @Override
            public void onSignalStrengthsChanged(SignalStrength signalStrength) {
                super.onSignalStrengthsChanged(signalStrength);
            }

            @Override
            public void onCellLocationChanged(CellLocation location) {
                super.onCellLocationChanged(location);
            }
        }
    }

解决方案

Have you tried registering to all 3 events at once with only 1 listener? Internally the mGsmCellInfoProvider may be in a Map or Set, so duplicates aren't allowed, causing the later .listen(...) call to override earlier ones.

Try this:

public void addListener() {
        teleManager = (TelephonyManager) mContext
                .getSystemService(Context.TELEPHONY_SERVICE);
        int listenMask = PhoneStateListener.LISTEN_CELL_INFO +
                         PhoneStateListener.LISTEN_CELL_LOCATION +
                         PhoneStateListener.LISTEN_SIGNAL_STRENGTHS;
        teleManager.listen(mGsmCellInfoProvider,listenMask);
    }

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