如何将 TextView 移动到relativeLayout中的x和y
我有一个相对布局,其中包含一些个人 TextView。我需要用 x 和 ay 放置这些文本视图,所以我这样做:
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);
问题是我给出的 x 和 y 将是 textView 的左上角,而它应该是中心。
为了使其成为中心,我重写了 TextViewAnnotation 中的 onSizeChanged,并将 height/2 和 width/2 减去当前 y 填充和 x 填充:
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);
但它什么也没做...我认为这是因为 setlayoutParams 采用 ViewGroup.LayoutParams 和不是RelativeLayout.LayoutParams。
我该如何修复它?
好的,我有一些消息。
我尝试使用RelativeLayout的addView(view,params)方法更改LayoutParams。 为此,我在 TextViewAnnotation 中创建了一个“控制器”,以便在触发 onSizeChanged 方法时调用此对象的方法:
//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);
}
如您所见,我尝试了此函数的 2 个版本:一个使用带参数的 addView,另一个不使用:一切都没有改变。
这次:
- 我有2个textViewAnnotation,每个都调用函数“onSizeChanged”,但只有一个调用“AjusterAnnotation”函数,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
- 唯一调用“AjusterAnnotation”的 textView 未绘制,即使 x、y、w 和 h 都可以......
请帮助 u_u
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);
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.
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);
But it does nothing... I think it's because setlayoutParams take a ViewGroup.LayoutParams and not a RelativeLayout.LayoutParams.
How can I fix it?
ok, I have some news.
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);
}
As you can see, I tried 2 versions of this function: one using addView with params, the other without : nothing changed.
This time:
- I have 2 textViewAnnotation, each one call the function "onSizeChanged", but only one call the "AjusterAnnotation" function, why?
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
- the only textView which made call to "AjusterAnnotation" is not drawed, even if the x,y,w and h are ok...
Please help u_u
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嗯,这似乎是一种非常复杂的布局处理方式。
为什么使用 x 和 y 坐标而不是仅将重力设置为中心?
AbsoluteLayout 被弃用是有原因的 - 但您可能会阅读相关内容。但首先,您是否阅读过此或任何其他布局教程?
Hmm, this seems like a very convoluted way of handling layout.
Why are you using x and y coordinates instead of just setting gravity to center?
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?