在android开发中使用ImageView实现视频显示时出现如下报错：
java.lang.NullPointerException: Attempt to read from field 'android.widget.ImageView com.example.smartdoor.ui.SmartDoorActivity.video' on a null object reference
at com.example.smartdoor.ui.SmartDoorActivity.access$500(SmartDoorActivity.java:49)
at com.example.smartdoor.ui.SmartDoorActivity$6.handleMessage(SmartDoorActivity.java:353)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:8169)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)
搜索问题后仍无法解决，希望有大佬能够解惑。
出错代码如下：
public static Handler updateUIHandler=new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case 1:
Log.e("SmartDoorActivity", "handleMessage: 接收视频帧");
Log.e("SmartDoorActivity", msg.obj.toString());
((SmartDoorActivity)context).video.setImageBitmap((Bitmap)msg.obj);
default:
break;
}
}
};
在这bao'c
((SmartDoorActivity)context).video.setImageBitmap((Bitmap)msg.obj);
