我正在动态创建一些ImageView并将它们放在RelativeLayout中,但我需要根据屏幕的高度和宽度来改变它们的大小。在设置高度时,视图和布局尚未创建,这意味着getHeight()和getWidth()返回0。我已经查看了 StackOverflow 上的其他帖子,但似乎没有特别针对我的问题。我在Fragment中完成所有操作,希望能得到解决方案。以下是我代码的一小部分:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.fragment_hello_moon, parent, false);
RelativeLayout rl = (RelativeLayout) v.findViewById(R.id.l1);
tl.setBackgroundColor(Color.RED);
ArrayList<ImageView> imgViews = new ArrayList<ImageView>();
//Cant get height or width of parent as hasnt been created yet
int numberOfBells = 16;
int height = rl.getHeight() / numberOfBells;
int width = rl.getWidth() / 2;
final ImageView imageTopL = new ImageView(getActivity());
if (true){
imageTopL.setId(1);
imageTopL.setImageResource(R.drawable.bell_dl_256);
RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
params1.addRule(RelativeLayout.ALIGN_PARENT_TOP);
params1.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
params1.setMargins(50,10,0,10);
imageTopL.setLayoutParams(params1);
//Need the size to vary depending on the height/width
imageTopL.getLayoutParams().height = height;
imageTopL.getLayoutParams().width = width;
imageTopL.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
imageTopL.setImageResource(R.drawable.bell_ul_256);
}
});
imgViews.add(imageTopL);
}
for(ImageView i : imgViews){
rl.addView(i);
}
return v;
}