添加子视图相对布局 [英] Adding child views to Relative Layout

问题描述

虽然对于相对布局和添加子视图编程我经历过很多问题，我无法来解决这个问题。

 的for（int i = 0; I＆LT;意见;我++）{

    ImageView的IMG =新ImageView的（这一点）;
    的LayoutParams img_params =新的LayoutParams（LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT）;
    img_params.addRule（RelativeLayout.ALIGN_PARENT_LEFT | RelativeLayout.ALIGN_PARENT_TOP，RelativeLayout.TRUE）;
    relativeLayout.addView（IMG，img_params）;

    TextView中的TextView =新的TextView（本）;
    的LayoutParams text_params =新的LayoutParams（LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT）;
    text_params.addRule（RelativeLayout.ALIGN_PARENT_RIGHT | RelativeLayout.ALIGN_PARENT_TOP，RelativeLayout.TRUE）;
    relativeLayout.addView（TextView的，text_params）;
}
 

下面

我添加日志：

  11月6日至27日：16：38.849：E / AndroidRuntime（20595）：java.lang.IllegalStateException：指定的孩子已经有一个父。你必须先调用removeView（）对孩子的家长。
 

解决方案

创建的ImageView的新实例和的TextView 在循环中

 的for（int i = 0; I＆LT;意见;我++）{
    的LayoutParams img_params =新的LayoutParams（LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT）;
    img_params.addRule（RelativeLayout.ALIGN_PARENT_LEFT | RelativeLayout.ALIGN_PARENT_TOP，RelativeLayout.TRUE）;
    ImageView的IMG =新ImageView的（这一点）;
    relativeLayout.addView（IMG，img_params）;

    的LayoutParams text_params =新的LayoutParams（LayoutParams.WRAP_CONTENT，LayoutParams.WRAP_CONTENT）;
    text_params.addRule（RelativeLayout.ALIGN_PARENT_RIGHT | RelativeLayout.ALIGN_PARENT_TOP，RelativeLayout.TRUE）;
    TextView中的TextView =新的TextView（本）;
    relativeLayout.addView（TextView的，text_params）;
}
 

Though I have been through many questions regarding relative layout and adding child view programatically, I am unable to resolve this issue

for (int i=0; i<views; i++) {

    ImageView img = new ImageView(this);
    LayoutParams img_params= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    img_params.addRule(RelativeLayout.ALIGN_PARENT_LEFT|RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
    relativeLayout.addView(img, img_params);

    TextView textview = new TextView(this);
    LayoutParams text_params= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    text_params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT|RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
    relativeLayout.addView(textview, text_params);
}

I have added log below:

06-27 11:16:38.849: E/AndroidRuntime(20595): java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.

解决方案

Create new instances of ImageView and TextView inside the loop

for (int i = 0; i < views; i++) {
    LayoutParams img_params= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    img_params.addRule(RelativeLayout.ALIGN_PARENT_LEFT|RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
    ImageView img = new ImageView(this);
    relativeLayout.addView(img, img_params);

    LayoutParams text_params= new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    text_params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT|RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
    TextView textview = new TextView(this);
    relativeLayout.addView(textview, text_params);
}

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