设置一直转圈的UI进度

//自己设置一个framelayout或者用content
  FrameLayout rootContainer = findViewById(R.id.llContainer);
        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
        // 设置对其方式为：屏幕居中对其
        lp.gravity = Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL;
        ProgressBar dialog = new ProgressBar(this);
        dialog.setVisibility(View.VISIBLE);
        dialog.setLayoutParams(lp);
        //一直转动的圈圈
dialog.setIndeterminateDrawable(this.getResources().getDrawable(R.drawable.loading_progress_draw));
        dialog.setBackgroundResource(R.mipmap.loading_test_bg);
        // 自定义小菊花
        rootContainer.isShown();
        rootContainer.addView(dialog);
        dialog.setVisibility(View.VISIBLE);