如何移动在一个RelativeLayout的一个TextView到x和一个ÿ

问题描述

我有一个包含一些的personnal TextViews一个RelativeLayout的。我需要把带有X和Y的textviews，所以我做的：

I have a relativelayout which contains some personnal TextViews. I need to place those textviews with an x and a y, so I do that:

RelativeLayout layoutAnnotations = (RelativeLayout)findViewById(R.id.affichageFiche_layoutAnnotations);

TextViewAnnotation tvAnno = new TextViewAnnotation(this,this,anno.getTexte(),anno.getFontSize());

RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params.leftMargin = x;
params.topMargin = y;
layoutAnnotations.addView(tvAnno, params);

的问题是，我请x和y将TextView的的左上角，而应该是中心

The problem is that the x and y I give will be the top left corner of the textView, while it should be the center.

要使它的中心，我overrided的onSizeChanged在我TextViewAnnotation和高度。减去/ 2和宽度/ 2到当前y填充和X填充：

To make it the center, I overrided the onSizeChanged in my TextViewAnnotation, and substract height/2 and width/2 to the current y padding and x padding:

protected void onSizeChanged(int w, int h, int oldw, int oldh) {
   Log.d("TextViewAnnotation", "onSizeChanged");
   super.onSizeChanged(w, h, oldw, oldh);
   if (w ==0 || h==0) return;

   RelativeLayout.LayoutParams old_params = (RelativeLayout.LayoutParams)getLayoutParams();
   int old_x = old_params.leftMargin;
   int old_y = old_params.topMargin;

   Log.d("AffFiche", "Ancien : x:"+old_x+" y:"+old_y+" w:"+w+" h:"+h);

   RelativeLayout.LayoutParams new_params = new RelativeLayout.LayoutParams(w, h);
   new_params.leftMargin = old_x - w/2;
   new_params.rightMargin = old_y - h/2;
   Log.d("AffFiche", "Nouveau : x:"+new_params.leftMargin+" y:"+new_params.rightMargin+" w:"+w+" h:"+h);

   setLayoutParams(new_params);

但它确实没有什么......我想这是因为setlayoutParams采取ViewGroup.LayoutParams而不是RelativeLayout.LayoutParams。

But it does nothing... I think it's because setlayoutParams take a ViewGroup.LayoutParams and not a RelativeLayout.LayoutParams.

我怎样才能解决这个问题？

How can I fix it?

好吧，我有一些消息。

我试图与addView的RelativeLayout的（查看，则params）方法来改变的LayoutParams。
要做到这一点，我在TextViewAnnotation创造了一个控制器来调用这个对象的方法时，onSizeChanged方法被触发：

I tried to change the LayoutParams with the addView(view,params) method of the RelativeLayout.To do that, I created a "controller" in my TextViewAnnotation to call a method of this object when the onSizeChanged method is fired:

//in TextViewAnnotation class
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        Log.d("TextViewAnnotation", "onSizeChanged");
        super.onSizeChanged(w, h, oldw, oldh);
        if (w ==0 || h==0) return;
        controller.ajusterAnnotation(this,w,h);
    }

//in my controller class
public void ajusterAnnotation(TextViewAnnotation annotation,int w,int h){
        Log.d("AffFiche", "AjusterAnnotation "+annotation);
        RelativeLayout layoutAnnotations = (RelativeLayout)findViewById(R.id.affichageFiche_layoutAnnotations);

        RelativeLayout.LayoutParams old_params = (RelativeLayout.LayoutParams)annotation.getLayoutParams();
        int old_x = old_params.leftMargin;
        int old_y = old_params.topMargin;
        Log.d("AffFiche", "Ancien : x:"+old_x+" y:"+old_y+" w:"+w+" h:"+h);

        RelativeLayout.LayoutParams new_params = new RelativeLayout.LayoutParams(w, h);
        new_params.leftMargin = old_x - w/2;
        new_params.rightMargin = old_y - h/2;
        Log.d("AffFiche", "Nouveau : x:"+new_params.leftMargin+" y:"+new_params.rightMargin+" w:"+w+" h:"+h);

        layoutAnnotations.removeView(annotation);
        //layoutAnnotations.addView(annotation, new_params);
        annotation.setLayoutParams(new_params);
        layoutAnnotations.addView(annotation);
    }

正如你所看到的，我试过2个版本这个功能：一是使用addView使用参数，其他没有：没有什么改变。

As you can see, I tried 2 versions of this function: one using addView with params, the other without : nothing changed.

这时间：

• 我有2个textViewAnnotation，每一个呼叫功能onSizeChanged，但只有一个呼叫AjusterAnnotation功能，为什么？

07-13 18:05:18.086: DEBUG/TextViewAnnotation(980): onSizeChanged
07-13 18:05:18.086: DEBUG/AffFiche(980): AjusterAnnotation affichageFiche.TextViewAnnotation@407405a0
07-13 18:05:18.106: DEBUG/AffFiche(980): Ancien : x:117 y:236 w:87 h:10
07-13 18:05:18.106: DEBUG/AffFiche(980): Nouveau : x:74 y:231 w:87 h:10
07-13 18:05:18.115: DEBUG/TextViewAnnotation(980): onSizeChanged

• 要AjusterAnnotation不是drawed这使得调用的唯一的TextView，即使X，Y，W和H都OK ......



请帮忙u_u

推荐答案

嗯，这似乎是处理布局的一种非常令人费解的方式。

Hmm, this seems like a very convoluted way of handling layout.

为什么要使用x和y坐标，而不是仅仅设置重力中心？

Why are you using x and y coordinates instead of just setting gravity to center?

AbsoluteLayout是pcated的一个原因去$ P $ - 但你也许能在读了。但首先，你有没有阅读或其他任何布局教程？

AbsoluteLayout was deprecated for a reason - but you might read up on that. But first, have you read this or any of the other Layout tutorials?

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