对话框工作时Android更改ProgressDialog drawable

Question

我有一个ProgressDialog,它是在Activity创建时启动的(insideOnCreate方法).

private void initDialog() {
    mProgressDialog = new ProgressDialog(this);
    mProgressDialog.setIndeterminate(true);
    mProgressDialog.setTitle("Please wait.");
    mProgressDialog.setMessage("Connecting to LinkedIn.");
    mProgressDialog.setCancelable(false);
    mProgressDialog.show();
}

在2500ms之后,我想将圆形动画更改为我的自定义图像(见下文)(就像我完成从服务器检索一些数据时的模拟,我完成了.)所以我需要向用户显示该过程已完成.为了这个目标,我选择了下一个方法.

1. 我显示对话框
2. 当我检索数据时,我改变了ProgressDialog的drawable

这我有一个问题.当我第一次设置一个drawable

private void initDialog() {
    mProgressDialog = new ProgressDialog(this);
    mProgressDialog.setIndeterminate(true);
    mProgressDialog.setTitle("Please wait.");
    mProgressDialog.setMessage("Connecting to LinkedIn.");
    mProgressDialog.setCancelable(false);
    //This
    mProgressDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.ok));
    mProgressDialog.show();
}

ProgressDialog改变drawable,看起来都很好.但是当ProgressBar启动(工​​作/循环动画播放)时,我尝试重置一个drawable

mProgressDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.ok));

我有意想不到的结果:圆形动画消失,没有图像设置为当前进度可绘制.没有图像!BLANK AREA而不是我的形象.

    authButton.postDelayed(new Runnable() {
        @Override
        public void run() {
            mProgressDialog.setIndeterminateDrawable(getResources().getDrawable(R.drawable.ok)); //doesn't work as expected!
        }
    }, 2500);

所以我的问题是 - 在ProgressDialog工作期间如何在运行时更改drawable？

需要改为

Answer 1

最后我找到了解决方案

ProgressDialog包含在ProgressBar哪里显示我们的drawable.

View view = inflater.inflate(a.getResourceId(com.android.internal.R.styleable.AlertDialog_horizontalProgressLayout, R.layout.alert_dialog_progress), null);
mProgress = (ProgressBar) view.findViewById(R.id.progress); // THIS
mProgressNumber = (TextView) view.findViewById(R.id.progress_number);
mProgressPercent = (TextView) view.findViewById(R.id.progress_percent);
setView(view);

当我们再次设置drawable时ProgressDialog,ProgressDialog 确实设置了一个新的drawable.但是这个drawable没有边界(显示这个视图的坐标).
所以我们必须设置它.我选择一种复制方式 - 只是从当前可绘制的复制边界ProgressDialog.你可以用另一种方式.

初始化对话框:

private void initDialog() {
    mProgressDialog = new ProgressDialog(this);
    mProgressDialog.setIndeterminate(true);
    mProgressDialog.setTitle("Please wait.");
    mProgressDialog.setMessage("Connecting to LinkedIn.");
    mProgressDialog.setCancelable(false);
}

节目

    mProgressDialog.show();

改变绘画

private void changeToDone(int resId) {
    //Getting a progressBar from dialog
    ProgressBar bar = (ProgressBar) mProgressDialog.findViewById(android.R.id.progress);
    //Getting a DONE(new) drawable from resources
    Drawable drawable = getResources().getDrawable(resId);
    //Getting a drawable from progress dialog
    Drawable indeterminateDrawable = bar.getIndeterminateDrawable();
    //Obtain a bounds of current drawable
    Rect bounds = indeterminateDrawable.getBounds();
    //Set bounds to DONE(new) drawable
    drawable.setBounds(bounds);
    //Set a new drawable
    bar.setIndeterminateDrawable(drawable);

    mProgressDialog.setTitle("Done.");
    mProgressDialog.setMessage("Connected.");
}

注意 :

在特定情况下未经测试的解决方案,如

• 我们有ActionBar/ 进度条TitleBar
• 另一种情况我们已经android.R.progress在屏幕上有一个窗口.在这种情况下,我认为我的解决方案将产生意外的行为.