使用带有图层列表的drawable,就好像它是普通图像一样

时间:2013-04-05 10:01:58

标签: android

我正在使用Intent来共享图像,就像stackoverflow上解释的那样。这是我从这个网站偷的代码(谢谢):)

private void share(String nameApp, String imagePath) {
    List<Intent> targetedShareIntents = new ArrayList<Intent>();
    Intent share = new Intent(android.content.Intent.ACTION_SEND);
    share.setType("image/jpeg");
    List<ResolveInfo> resInfo = getPackageManager().queryIntentActivities(share, 0);
    if (!resInfo.isEmpty()){
        for (ResolveInfo info : resInfo) {
            Intent targetedShare = new Intent(android.content.Intent.ACTION_SEND);
            targetedShare.setType("image/jpeg"); // put here your mime type

            if (info.activityInfo.packageName.toLowerCase().contains(nameApp) || 
                    info.activityInfo.name.toLowerCase().contains(nameApp)) {
                targetedShare.putExtra(Intent.EXTRA_TEXT,     "My body of post/email");
                targetedShare.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(imagePath)) );
                targetedShare.setPackage(info.activityInfo.packageName);
                targetedShareIntents.add(targetedShare);
            }
        }

        Intent chooserIntent = Intent.createChooser(targetedShareIntents.remove(0), getResources().getString(R.string.share_select));
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetedShareIntents.toArray(new Parcelable[]{}));
        startActivity(chooserIntent);
    }
}

我的问题是我没有任何jpg可以分享,但我创建了图像,有这样的drawables和layer-list:

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:drawable="@drawable/background01" />
    <item android:drawable="@drawable/img02" />
    <item android:drawable="@drawable/img07" />
</layer-list>

我不明白我是否以及如何使用这些drawables,因为它们是完整的图像并在share()函数中使用它们。有人可以解释一下吗?

提前谢谢。

1 个答案:

答案 0 :(得分:1)

这就是你如何通过两个重叠的位图图像获得位图:

 private Bitmap overlay(Bitmap bmp1, Bitmap bmp2) {
    Bitmap bmOverlay = Bitmap.createBitmap(bmp1.getWidth(), bmp1.getHeight(), bmp1.getConfig());
    Canvas canvas = new Canvas(bmOverlay);
    canvas.drawBitmap(bmp1, new Matrix(), null);
    canvas.drawBitmap(bmp2, new Matrix(), null);
    return bmOverlay;
}

获得位图后,您可以将其保存在任何位置并通过您的方法进行共享。