Question

when i am browsing in my app i get sometimes this error. I am not sure this error comes randomly and i can’t find out why. The Log doesn’t show anything specific to my application?

I hope someone could give me a tip or a hint why this error occoures. (The last time it came when i tried to open a popup, a Quickaction Dialog, after occouring a second time with the same Quickaction Dialog it worked again after i tried it a 3rd time. And now it works all the time, again?)

08-01 11:09:15.980: ERROR/AndroidRuntime(9579): FATAL EXCEPTION: main
08-01 11:09:15.980: ERROR/AndroidRuntime(9579): java.lang.NullPointerException
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.widget.PopupWindow$PopupViewContainer.dispatchKeyEvent(PopupWindow.java:1445)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.view.ViewRoot.deliverKeyEventToViewHierarchy(ViewRoot.java:2664)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.view.ViewRoot.deliverKeyEvent(ViewRoot.java:2629)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.view.ViewRoot.handleMessage(ViewRoot.java:1935)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.os.Looper.loop(Looper.java:143)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at android.app.ActivityThread.main(ActivityThread.java:4196)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at java.lang.reflect.Method.invokeNative(Native Method)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at java.lang.reflect.Method.invoke(Method.java:507)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
08-01 11:09:15.980: ERROR/AndroidRuntime(9579):     at dalvik.system.NativeStart.main(Native Method)

Here some more details:

QuickAction qa = QuickactionBuilder.showSaveForgetQuickaction();

                qa.setOnActionItemClickListener(new QuickAction.OnActionItemClickListener() {
                    @Override
                    public void onItemClick(int pos) {
                        if (pos == 0) { // SAVE
                            Toast.makeText(ctxHolder.getCtx(), "TODO SAVE", Toast.LENGTH_SHORT).show();
                        } else if (pos == 1) { // REJECT
                            Toast.makeText(ctxHolder.getCtx(), "REJECTED", Toast.LENGTH_SHORT).show();
                        } else { // CANCEL
                            Toast.makeText(ctxHolder.getCtx(), "CANCEL", Toast.LENGTH_SHORT).show();
                        }
                    }
                });

                qa.show(v);

THe QuickactionBuilder only creates the QuickAction Dialog for me.
That’s as simple as:
(Only to show the basics of that method)

QuickAction qa = new QuickAction
ActionItem ai = new ActionItem() 
// some setters ...

qa.add(ai)

return qa;

Answer 1

I had the same problem with QuickAction
i received crashes from users although i couldn’t reproduce them on my devices
so if anyone still needs the solution i’d be glad to share it

the idea is to avoid of using PopupViewContainer in PopupWindow because the crash bug is in its dispatchKeyEvent(KeyEvent event) method. The only way i could do that is to keep backgroundDrawable == null. Then you have to handle outside touches and Back button yourself.

PopupWindows Class:

public PopupWindows(Context context) {
    mContext    = context;

    mWindow     = new PopupWindow(context);
    mWindow.setBackgroundDrawable(null);
    ......
}

protected void onShow() {   

    if (mRootView == null) {
        return;
    }

    if (mRootView instanceof CustomRelativeLayout) {
        ((CustomRelativeLayout)mRootView).setDispatchKeyEventListener(new CustomRelativeLayout.OnDispatchKeyEventListener() {

            @Override
            public void onDispatchKeyEvent(KeyEvent event) {
                if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0 && mWindow.isShowing()) {
                    dismiss();
                }
            }
        });
    }       

    mRootView.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (event.getAction() == MotionEvent.ACTION_DOWN && mWindow.isShowing()) {
                dismiss();
                return true;
            }
            return false;
        }
    });

}

Do not set any drawable here:

protected void preShow() {
    if (mRootView == null) 
        throw new IllegalStateException("setContentView was not called with a view to display.");

    onShow();

    mWindow.setWidth(WindowManager.LayoutParams.WRAP_CONTENT);
    mWindow.setHeight(WindowManager.LayoutParams.WRAP_CONTENT);
    mWindow.setTouchable(true);
    mWindow.setFocusable(true);
    mWindow.setOutsideTouchable(true);

    mWindow.setContentView(mRootView);
}

And everything next is classic

CustomRelativeLayout:

public class CustomRelativeLayout extends RelativeLayout {

public CustomRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}

public CustomRelativeLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
}

public CustomRelativeLayout(Context context) {
    super(context);
}

private OnDispatchKeyEventListener mOnDispatchKeyEventListener;



public void setDispatchKeyEventListener(OnDispatchKeyEventListener listener) {
    mOnDispatchKeyEventListener = listener;
}

@Override
public boolean dispatchKeyEvent(KeyEvent event) {
    if (mOnDispatchKeyEventListener != null) {
        mOnDispatchKeyEventListener.onDispatchKeyEvent(event);
    }
    return super.dispatchKeyEvent(event);
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    return super.onTouchEvent(event);
}   

public static interface OnDispatchKeyEventListener {
    public void onDispatchKeyEvent(KeyEvent event);
}
}

popup_vertical.xml and popup_horizontal.xml:

just use com.your.package.CustomRelativeLayout instead of top level RelativeLayout

Hope this will help