发现一个问题，try 异常少了

[fff4]

**什么jzvd版本 7.0_preview **是否和安卓版本有关系，什么版本

**是否和特定品牌的手机机型有关系，什么机型

**相关log是什么 Process: com.ld.mirror, PID: 14850 java.lang.NullPointerException: Attempt to invoke virtual method 'long tv.danmaku.ijk.media.player.IjkMediaPlayer.getDuration()' on a null object reference at com.ld.ldm.activity.technique.vide.JZMediaIjk.getDuration(JZMediaIjk.java:106) at cn.jzvd.Jzvd.getDuration(Jzvd.java:786) at cn.jzvd.Jzvd$ProgressTimerTask.lambda$run$0(Jzvd.java:989) at cn.jzvd.-$$Lambda$Jzvd$ProgressTimerTask$1zOf0X1AJWTfG4NszoBAvJB_9MM.run(lambda) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:746) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:636) **复现流程 public long getDuration() { long duration = 0; //TODO MediaPlayer 判空的问题 // if (JZMediaPlayer.instance().mediaPlayer == null) return duration; try { duration = mediaInterface.getDuration(); } catch (IllegalStateException e) { e.printStackTrace(); return duration; } return duration; } **最好有截图或者视频说明情况 这里有空指针异常的情况，但是只try了非法参数异常

[lipangit]

getDuration 这块一直有问题。。具体场景什么样？try 这个nullpoint能解决问题吗

[masudr4n4]

@lipangit Hey sir apk download link is broken ,can you pls fix it or can you pls publish the app in f-droid ro playstore?

[lipangit]

uploaded------------------ 原始邮件 ------------------ 发件人: "Md Masud Rana"[email protected] 发送时间: 2019年5月2日(星期四) 中午12:23 收件人: "lipangit/JiaoZiVideoPlayer"[email protected]; 抄送: "Nathen"[email protected];"Mention"[email protected]; 主题: Re: [lipangit/JiaoZiVideoPlayer] 发现一个问题，try 异常少了 (#2411)

@lipangit Hey sir apk download link is broken ,can you pls fix it or can you pls publish the app in f-droid ro playstore?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[masudr4n4]

Tnx

[coder-pig]

JZMediaSystem.start() 时mMediaHandler为空，调用post()引起空指针异常； 复现不了，但是友盟很多这个报错，希望作者可以做下判空~感谢

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.os.Handler.post(java.lang.Runnable)' on a null object reference
    at cn.jzvd.JZMediaSystem.start(JZMediaSystem.java:62)
    at cn.jzvd.Jzvd.onPrepared(Jzvd.java:350)
    at cn.jzvd.JZMediaSystem.lambda$onPrepared$6(JZMediaSystem.java:139)
    at cn.jzvd.-$$Lambda$JZMediaSystem$zIW9UuYfRsLvwe6Lu-iDTY-nGW8.run(Unknown Source:2)
    at android.os.Handler.handleCallback(Handler.java:883)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:238)
    at android.app.ActivityThread.main(ActivityThread.java:7905)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:984)