但presenting一个TextView一样的界面

但presenting一个TextView一样的界面

本文介绍了证明在使用web视图,但presenting一个TextView一样的界面,一个Android应用程序的文本?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我在找一个简单的方法来忘记,我使用了一个的WebView 来在我的的TextView 。有人曾经改变这个自定义视图?我很清楚,我可以做这样的事情:

I'm looking for a simple way to forget that I'm using a WebView to have justified text in my TextView. Has someone made a custom view for this? I'm well aware that I can do something like this:

 WebView view = new WebView(this);
         view.loadData("my html with text justification","text/html","utf-8");

但是,当你要设置的大小,颜色或的TextView 其他常见特性它变得丑陋。必须有这样做的更方便的方法。

But it gets ugly when you want to set the size, the color or other common properties of the TextView. There must be a more convenient way of doing it.

推荐答案

有人让我心烦,我承认这一点。我喜欢 TextViews 看起来像 TextViews 在code,即使我使用的是的WebView 作为实现文本对齐的方式:对齐格式,我不想看它这样

It was getting on my nerves, I admit it. I like the TextViews to look like TextViews in the code, and even if I'm using a WebView as the means of achieving the text-align:justified formatting, I don't want to look at it that way.

我创建了一个自定义视图(丑陋的,可能不好)来实现,我从通常使用的方法的的TextView 并修改的WebView的内容,以反映这些的变化。羯羊它是为别人或潜在的危险我真的不知道,对我来说它的工作原理是有用的,我用它的几个项目,没有遇到任何问题。唯一的小麻烦是,我认为它是一个更大的收费内存明智的,但没什么可担心的,如果它只是一个或两个(纠正我,如果我错了)。

I created a custom view (ugly, probably bad) that implements the methods that I commonly use from the TextView and modifies the content of the WebView in order to reflect those changes.Wether it's useful for someone else or a potential hazard I really don't know, for me it works, I've used it in several projects and haven't run into any issues. The only minor inconvenience is that I assume it as a bigger toll memory-wise but nothing to worry about if it's just one or two (correct me if I'm wrong).

结果如下:

而$ C $下编程设置它是如此简单:

And the code for setting it programmatically is as simple as this:

 JustifiedTextView J = new JustifiedTextView();
                   J.setText("insert your text here");

当然它会是愚蠢的离开它一样,所以我还添加了方法来改变字体大小和字体,颜色,这基本上都是我用TextViews的。这意味着我可以做这样的事情:

Of course it'd be stupid to leave it like that so I also added the methods for changing the font-size and the font-color which are basically all I use TextViews for. Meaning I can do something like this:

 JustifiedTextView J = new JustifiedTextView();
                   J.setText("insert your text here");
                   J.setTextColor(Color.RED);
                   J.setTextSize(30);

和得到以下结果(图像裁剪):

And obtain the following result (images are cropped):

但是,这是不是向我们展示它的外观,它的分享如何你做到了!

我知道,我知道。下面是完整的code。它设置透明背景和加载UTF-8字符串到视图时,也解决了问题。见reloadData()评论的细节。

I know, I know.Here's the full code. It also addresses Problems when setting transparent background and loading UTF-8 strings into the view. See the comments in reloadData() for details.

public class JustifiedTextView extends WebView{
    private String core      = "<html><body style='text-align:justify;color:rgba(%s);font-size:%dpx;margin: 0px 0px 0px 0px;'>%s</body></html>";
    private String textColor = "0,0,0,255";
    private String text      = "";
    private int textSize     = 12;
    private int backgroundColor=Color.TRANSPARENT;

    public JustifiedTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.setWebChromeClient(new WebChromeClient(){});
    }

    public void setText(String s){
        this.text = s;
        reloadData();
    }

    @SuppressLint("NewApi")
    private void reloadData(){

        // loadData(...) has a bug showing utf-8 correctly. That's why we need to set it first.
        this.getSettings().setDefaultTextEncodingName("utf-8");

        this.loadData(String.format(core,textColor,textSize,text), "text/html","utf-8");

        // set WebView's background color *after* data was loaded.
        super.setBackgroundColor(backgroundColor);

        // Hardware rendering breaks background color to work as expected.
        // Need to use software renderer in that case.
        if(android.os.Build.VERSION.SDK_INT >= 11)
            this.setLayerType(WebView.LAYER_TYPE_SOFTWARE, null);
    }

    public void setTextColor(int hex){
        String h = Integer.toHexString(hex);
        int a = Integer.parseInt(h.substring(0, 2),16);
        int r = Integer.parseInt(h.substring(2, 4),16);
        int g = Integer.parseInt(h.substring(4, 6),16);
        int b = Integer.parseInt(h.substring(6, 8),16);
        textColor = String.format("%d,%d,%d,%d", r, g, b, a);
        reloadData();
    }

    public void setBackgroundColor(int hex){
        backgroundColor = hex;
        reloadData();
    }

    public void setTextSize(int textSize){
        this.textSize = textSize;
        reloadData();
    }
}

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08-31 02:46