过聚焦在GridView控件 [英] Overfocus in GridView

问题描述

我想实施聚焦下一个项目和Overscrolls在列表的最后一个GridView。

I'm trying to implement a GridView that Focuses the next Item and "Overscrolls at the End of a List.

例如

1 2 3
4 5 6
7 8 9

我要滚动1> 2> 3> 4> 5> 6> ... 只是按pressing正确的密钥。现在我只能滚动1> 2> 3，然后停止和我有向下键滚动。

I want to scroll 1 > 2 > 3 > 4 > 5 > 6 > ... just by pressing the right Key. Right now I can only Scroll 1 > 2 > 3 and then it stops and I have to scroll with the down Key.

我已经尝试设置code中的focusViews（在我的ArrayList适配器，填充在GridView的 getView（）法）

I already tried to set the focusViews in code (In the getView() method of my ArrayList Adapter, that fills the GridView)

view.setId(position);
view.setNextFocusLeftId(position-1);
view.setNextFocusRightId(position+1);

但是，这并不工作。我找到了布尔*滚动（INT方向）在<一个方法href=\"http://grep$c$c.com/file/repository.grep$c$c.com/java/ext/com.google.android/android/4.2.2_r1/android/widget/GridView.java#GridView.arrowScroll%28int%29\"相对=nofollow>的grep code

但theese是包装本地，我不能覆盖它们。关于如何解决这个任何建议。我可以用另外的看法，得到相同的布局作为一个GridView？

But theese are Package Local and I can't overwrite them. Any suggestions on how to solve this. Can I use another View and get the same Layout as a Gridview?

我还设置了 OnFocusChangeListener 来看看，没有反应发生了什么。

I also set a OnFocusChangeListener to see what happens with no reaction.

编辑：
我只是说这我的 MainActivity ，但现在它似乎的onkeydown 只有被调用时，GridView控件不处理该KeyEvent（如果在一排的最后一个项目被选中）。

I just added this to my MainActivity, but now it seems to onKeyDown only get called when the GridView doesn't handle the KeyEvent (If the Last Item in a row is selected).

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    switch (keyCode) {
    case KeyEvent.KEYCODE_DPAD_LEFT:
        if (focusedView > 0) {
            mContainer.setSelection(--focusedView);
            Log.v("TEST", focusedView+"");
        }
        return true;
    case KeyEvent.KEYCODE_DPAD_RIGHT:
        if (focusedView < mAdapter.getCount() - 1) {
            mContainer.setSelection(++focusedView);
            Log.v("TEST", focusedView+"");
        }
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

编辑2：这是，使f *** ING集团愚蠢的，但工作这么该死的罚款：D

Edit 2: This is so f***ing stupid but works so damn fine :D

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    switch (keyCode) {
    case KeyEvent.KEYCODE_DPAD_LEFT:
        mContainer.onKeyDown(KeyEvent.KEYCODE_DPAD_UP, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_UP));
        mContainer.onKeyDown(KeyEvent.KEYCODE_DPAD_RIGHT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_RIGHT));
        mContainer.onKeyDown(KeyEvent.KEYCODE_DPAD_RIGHT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_RIGHT));
        return true;
    case KeyEvent.KEYCODE_DPAD_RIGHT:
        mContainer.onKeyDown(KeyEvent.KEYCODE_DPAD_DOWN, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_DOWN));
        mContainer.onKeyDown(KeyEvent.KEYCODE_DPAD_LEFT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_LEFT));
        mContainer.onKeyDown(KeyEvent.KEYCODE_DPAD_LEFT, new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DPAD_LEFT));
        return true;
    }

    return super.onKeyDown(keyCode, event);
}

我真的不希望发布此作为回答，我真的不希望有使用code，因为它是这样一个愚蠢的解决办法

I really don't want to post this as Answer, and I really don't want to have to use this Code because it is such a stupid workaround

TLDR：帮助还是需要

推荐答案

好吧，我设法简单地用一块code的，这对我来说是pretty足够的解决方案。

Ok, I managed this with a simple piece of Code and it is a pretty enough solution for me.

我在GridView类派生，并已覆盖的方法：

I derived from the GridView class and have Overridden the Method:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    boolean keyHandled = false;
    if (this.getSelectedView() != null) {
        int focusedViewPosition = this.getSelectedItemPosition();
        switch (keyCode) {
        case KeyEvent.KEYCODE_DPAD_LEFT:
            if (focusedViewPosition > 0) {
                int prevItemPosition = focusedViewPosition - 1;
                this.setSelection(prevItemPosition);
                keyHandled = true;
            }
            break;
        case KeyEvent.KEYCODE_DPAD_RIGHT:
            if (focusedViewPosition < this.getChildCount() - 1) {
                int nextItemPosition = focusedViewPosition + 1;
                this.setSelection(nextItemPosition);
                keyHandled = true;
            }
            break;
        default:
            keyHandled = super.onKeyDown(keyCode, event);
        }
    } else {
        keyHandled = super.onKeyDown(keyCode, event);
    }
    return keyHandled;
}

这个解决方案很高兴的事情是，它并不需要查看任何一组ID和所有的GridView的/适配器工作。

Nice thing about this solution is that it doesn't need any set IDs of the Views and works with all GridViews / Adapters.

我为什么需要这么长的很简单，就是无处不在的Andr​​oid的重点是名称焦点 exept在这儿，它被称为选择。这就是为什么我没有找到所需要的方法。谁能告诉我，为什么他们忘了该公约？ ：）

Why I needed so long is simply that everywhere in Android the Focus is name Focus exept here where it is called Selection. Thats why I didn't find the needed Methods. Can anyone tell me why they forgot about that convention? :)

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