如何防止 MaterialDialog 冻结

Question

我正在尝试使用 Glide 下载图片，并将其设置为墙纸，在下载时，它会显示一个使用 MaterialDialogs 库的对话框，但不知何故，当图片快要加载时，对话框会冻结一秒钟...这是我的代码：

final MaterialDialog downloadDialogA = new MaterialDialog.Builder(context)
                                .content(R.string.downloading_wallpaper)
                                .progress(true, 0)
                                .cancelable(false)
                                .show();

                        Glide.with(context)
                                .load(wallurl)
                                .asBitmap()
                                .into(new SimpleTarget<Bitmap>() {
                                    @Override
                                    public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                                        downloadDialogA.setContent(context.getString(R.string.setting_wall_title));
                                        if (resource != null) {
                                            WallpaperManager wm = WallpaperManager.getInstance(context);
                                            try {
                                                wm.setBitmap(resource);
                                                Toast.makeText(context, R.string.set_as_wall_done, Toast.LENGTH_LONG).show();
                                                Log.v("Wall", "It worked!");
                                            } catch (IOException e2) {
                                                Toast.makeText(context, e2.getLocalizedMessage(), Toast.LENGTH_LONG).show();
                                                Log.v("Wall", "Error " + e2.getMessage());
                                            }
                                        }
                                        downloadDialogA.dismiss();
                                    }
                                });

请注意，我不想使用其他库来下载图片。它工作正常。我只是想防止对话框冻结。

提前致谢。

Answer 1

我就是这样做的。

我创建了一个新的 AsyncTask，代码是：

public class ApplyWallpaper extends AsyncTask<Void, String, Boolean> {
    private Context context;
    private Activity activity;
    private MaterialDialog dialog;
    private Bitmap resource;

    public ApplyWallpaper(Context context, MaterialDialog dialog, Bitmap resource) {
        this.activity = (Activity) context;
        this.context = context;
        this.dialog = dialog;
        this.resource = resource;
    }

    @Override
    protected Boolean doInBackground(Void... params) {
        WallpaperManager wm = WallpaperManager.getInstance(context);
        Boolean worked;
        try {
            wm.setBitmap(resource);
            worked = true;
            Log.e("Wall", "It worked!");
        } catch (IOException e2) {
            worked = false;
            Log.e("Wall", "Error " + e2.getMessage());
        }
        return worked;
    }

    @Override
    protected void onPostExecute(Boolean worked) {
        if (worked){
            dialog.dismiss();
            Toast.makeText(context, R.string.set_as_wall_done, Toast.LENGTH_LONG).show();
        } else {
            Toast.makeText(context, R.string.error, Toast.LENGTH_LONG).show();
        }
    }
}

然后，当资源就绪时（使用Glide提供的回调方法），我执行了AsyncTask，像这样：

Glide.with(context)
        .load(wallurl)
        .asBitmap()
        .into(new SimpleTarget<Bitmap>() {
            @Override
            public void onResourceReady(final Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                if (resource != null) {
                    downloadDialogA.setContent(context.getString(R.string.setting_wall_title));
                    new ApplyWallpaper(context, downloadDialogA, resource).execute();
                }
            }
        });

并且工作完美。

感谢Javier Santos的指导。

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