我ImageView
内的TextView
和RelativeLayout
嵌套在ScrollView
内。我无法让ImageView
的顶部与TextView
的顶部对齐。它从文本视图顶部边缘向下徘徊约150dp。
这是我的xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/transitionForm"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/backgroundcolor"
android:orientation="horizontal" >
<ScrollView
android:id="@+id/svTutorial"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:splitMotionEvents="true"
android:layout_above="@+id/ImageBottom"
android:layout_below="@+id/ImageTop"
android:scrollbars="vertical"
>
<RelativeLayout
android:id="@+id/layoutTransitionPicWidgets"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:orientation="horizontal">
<TextView
android:id="@+id/lblQuestionText"
android:layout_width="250dp"
android:layout_height="fill_parent"
android:layout_marginBottom="30px"
android:layout_marginLeft="50px"
android:layout_marginTop="10dp"
android:layout_marginRight="25px"
android:layout_alignParentLeft="true"
android:layout_weight="1"
android:text="get text from db."
android:textColor="#000000"
android:textSize="20sp" />
<ImageView
android:id="@+id/imgPic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/slidetest"
/>
</RelativeLayout>
</ScrollView>
</RelativeLayout>
我正在尝试以编程方式根据其大小更改图像的宽度,因此我以编程方式设置所有参数。
以下是代码:
imgPic = (ImageView)findViewById(R.id.imgPic);
Display display = getWindowManager().getDefaultDisplay();
DisplayMetrics outMetrics = new DisplayMetrics ();
display.getMetrics(outMetrics);
final float density = getResources().getDisplayMetrics().density;
final float dpHeight = outMetrics.heightPixels / density;
final float dpWidth = outMetrics.widthPixels / density;
ViewTreeObserver vto = imgPic.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
imgPic.getViewTreeObserver().removeOnPreDrawListener(this);
final int finalHeight = imgPic.getMeasuredHeight();
final int finalWidth = imgPic.getMeasuredWidth();
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params.width = Math.round(.4f * dpWidth * density);
params.leftMargin = 50;
params.topMargin = 0;
params.rightMargin = 25;
//params.gravity= Gravity.TOP;
params.addRule(RelativeLayout.ALIGN_PARENT_TOP);
params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
params.addRule(RelativeLayout.RIGHT_OF, R.id.lblQuestionText);
imgPic.setLayoutParams(params);
return true;
}
});
我已尝试使用LinearLayout执行此操作并获得相同的结果。我错过了什么?
答案 0 :(得分:0)
您可以将其添加到ImageView
android:layout_alignTop="@+id/lblQuestionText"
但我认为还有更多的事情要发生。您没有在ImageView
上指定任何对齐属性,因此可能无法布置您认为要进行布局的位置。
似乎您希望ImageView
位于TextView
的右侧,在这种情况下,将其添加到ImageView
会有所帮助:
android:layout_toRightOf="@+id/lblQuestionText"