Question

我会保持这么简单。我想在ImageView中将AlertDialog设置为Drawables数组中的图像。我可以通过访问ImageView来检索我要设置为dismiss的图像mImages [位置]。

以下是简要说明（以下完整说明）：简而言之 - 我需要一种方法将图像从我的主要活动传递到对话框然后在取消finish();对话框上并确认设置系统壁纸（到主活动传递的图像）然后{{1}活动。

以下是完整的解释：

用户会在Gallery上方显示ImageView和Gallery，以显示焦点在Gallery的图片的较大预览。

Gallery中显示的图像使用以下设置：

        // setup wallpaper array
private void findWallpapers() {
    mThumbs = new ArrayList<Integer>(24);
    mImages = new ArrayList<Integer>(24);

    final Resources resources = getResources();
    final String packageName = getApplication().getPackageName();

    addWallpapers(resources, packageName, R.array.wallpapers);
}

// setup array defining all wallpapers & define thumbnails
private void addWallpapers(Resources resources, String packageName, int list) {
    final String[] extras = resources.getStringArray(list);
    for (String extra : extras) {
        int res = resources.getIdentifier(extra, "drawable", packageName);
        if (res != 0) {
            final int thumbRes = resources.getIdentifier(extra + "_small",
                    "drawable", packageName);

            if (thumbRes != 0) {
                mThumbs.add(thumbRes);
                mImages.add(res);
            }
        }
    }
}

按下“设置壁纸”Button后，应打开AlertDialog，其中包含焦点在Gallery的图像的另一个预览。 AlertDialog将包含TextView的说明，我们建议设置为壁纸的图片预览，“正常”Button和“取消”Button 。按“好”Button会将ImageView预览中的图片设置为InputStream的系统壁纸。

再次感谢！

    private void selectWallpaper(int position) {
    Toast.makeText(getBaseContext(), "Select Wallpaper", Toast.LENGTH_SHORT)
            .show();

    if (mIsWallpaperSet) {
        return;
    }

    mIsWallpaperSet = true;

    Context context = this;
    // CharSequence text = "Wallpaper Set!";
    // int duration = Toast.LENGTH_LONG;
    InputStream stream = getResources().openRawResource(
            mImages.get(position));
            final Dialog accept = new Dialog(context);
    accept.setContentView(R.layout.confirm);
    accept.setTitle("Please Confirm");
    TextView instructions = (TextView) accept.findViewById(R.id.textView1);
    instructions.setText("Would you like to set this as your wallpaper?");
    ImageView wallpreview = (ImageView) accept
            .findViewById(R.id.imageView1);
    wallpreview.createFromStream(stream, "test");
    // SETUP cancel (no btn) listener
    Button cancelbtn = (Button) accept.findViewById(R.id.button2);
    cancelbtn.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            accept.dismiss();
        }
    });
    // SETUP Yes Btn listener
    Button okbtn = (Button) accept.findViewById(R.id.button1);
    okbtn.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            // dismiss being used as placeholder, actually setting wallpaper
            // will be added
            accept.dismiss();
        }
    });
    accept.show();
}

{
    ;
}

Answer 1

您可以使用布局充气程序来扩充警报对话框布局，并将其分配给主活动中的警报对话框视图。您可以使用findViewById（）为这些按钮设置onClickListeners侦听器。这将确保您的onClickListener可以看到mImages。

final ArrayList<Integer> mImages=new ArrayList<Integer>();
final ImageView v=findViewById(R.id.imageView);

AlertDialog d=new AlertDialog.Builder(Main.this).create();
d.setView(getLayoutInflater().inflate(R.layout.dialogView,findViewById(R.id.ROOT_LAYOUT_IN_XML_ID),false));

((ImageView)d.findViewById(R.id.YOUR_VIEW_ID)).setImageResource(mImages.get(?));

((Button)d.findViewById(R.id.cancelButton)).setOnClickListener(new OnClickListener()
{
    d.dismiss();
});
((Button)d.findViewById(R.id.acceptButton)).setOnClickListener(new OnClickListener()
{
    v.setImageResource(mImages.get(?));
    d.dismiss();
});

从数组引用设置imageview？

1 个答案: