如何获取TextView的行数? [英] How to get number of lines of TextView?

问题描述

我想获取一个文本视图的行数

I want to get the number of lines of a text view

textView.setText("Test line 1 Test line 2 Test line 3 Test line 4 Test line 5.............")

textView.getLineCount(); 总是返回 zero

那我也试过了:

ViewTreeObserver vto = this.textView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

    @Override
    public void onGlobalLayout() {
        ViewTreeObserver obs = textView.getViewTreeObserver();
        obs.removeGlobalOnLayoutListener(this);
        System.out.println(": " + textView.getLineCount());

    }
});

它返回准确的输出.

但这仅适用于静态布局.

But this works only for a static layout.

当我动态扩展布局时，这不再起作用了.

When I am inflating the layout dynamically this doesn't work anymore.

如何找到 TextView 中的行数?

How could I find the number of line in a TextView?

推荐答案

我能够使用 post 让 getLineCount() 不返回 0，如下所示:

I was able to get getLineCount() to not return 0 using a post, like this:

textview.setText("Some text");
textview.post(new Runnable() {
    @Override
    public void run() {
        int lineCount = textview.getLineCount();
        // Use lineCount here
    }
});

这篇关于如何获取TextView的行数?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！