java - 如何以编程方式在布局中居中进度条？

Question

我想以编程方式在代码中居中我的进度条。这是我的代码:

  LinearLayout streamLayout = new LinearLayout(this);
            streamLayout.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
            streamLayout.setOrientation(LinearLayout.VERTICAL);
            streamLayout.setGravity(Gravity.CENTER);

            LinearLayout newsLayout = new LinearLayout(this);
            streamLayout.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
            streamLayout.setOrientation(LinearLayout.VERTICAL);
            streamLayout.setGravity(Gravity.CENTER);

            mSwipeView.addView(streamLayout);
            mSwipeView.addView(newsLayout);
            mSwipeView.addView(new LinearLayout(this));

            ((LinearLayout) mSwipeView.getChildContainer().getChildAt(0)).addView(streamListView);
            ((LinearLayout) mSwipeView.getChildContainer().getChildAt(0)).addView(streamProgressBar);
            ((LinearLayout) mSwipeView.getChildContainer().getChildAt(1)).addView(newsListView);
            ((LinearLayout) mSwipeView.getChildContainer().getChildAt(1)).addView(newsProgressBar);
            ((LinearLayout) mSwipeView.getChildContainer().getChildAt(2)).addView(chartImageView);

如何让进度条在我的布局中垂直居中，水平居中？

Answer 1

尝试使用 LinearLayout.layoutParams 并将它们设置到 View 。它们包含一个场重力，您可以将其设置为 Gravity.CENTER 或类似的。

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