我在点击时尝试更改ImageView
背景(如Duolingo)
这是我的片段代码:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(
R.layout.frag_repeat, container, false);
final int[] a1 = {0};
final int[] a2 = {0};
final int[] a3 = {0};
final int[] a4 = {0};
TypedArray itemsIcon = getResources().obtainTypedArray(R.array.nav_drawer_icons);
ImageView wer1 = (ImageView) rootView.findViewById(R.id.imageView);
ImageView wer2 = (ImageView) rootView.findViewById(R.id.imageView2);
ImageView wer3 = (ImageView) rootView.findViewById(R.id.imageView23);
ImageView wer4 = (ImageView) rootView.findViewById(R.id.imageView43);
TextView textView1 = (TextView) rootView.findViewById(R.id.textView711);
textView1.setText(ss[i]);
wer1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
a1[0] = 1;
a2[0] = 0;
a3[0] = 0;
a4[0] = 0;
}
});
wer2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
a2[0] = 1;
a1[0] = 0;
a3[0] = 0;
a4[0] = 0;
}
});
wer3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
a3[0] = 1;
a2[0] = 0;
a1[0] = 0;
a4[0] = 0;
}
});
wer4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
a4[0] = 1;
a2[0] = 0;
a3[0] = 0;
a1[0] = 0;
}
});
if(a1[0] > 0){
wer3.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer2.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer1.setBackgroundColor(Color.parseColor("#42A5F5"));
wer4.setBackgroundColor(Color.parseColor("#FFFFFF"));
} else if(a2[0] > 0){
wer1.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer3.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer2.setBackgroundColor(Color.parseColor("#42A5F5"));
wer4.setBackgroundColor(Color.parseColor("#FFFFFF"));
}else if(a3[0] > 0){
wer1.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer2.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer3.setBackgroundColor(Color.parseColor("#42A5F5"));
wer4.setBackgroundColor(Color.parseColor("#FFFFFF"));
} else if(a4[0] > 0){
wer1.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer2.setBackgroundColor(Color.parseColor("#FFFFFF"));
wer4.setBackgroundColor(Color.parseColor("#42A5F5"));
wer3.setBackgroundColor(Color.parseColor("#FFFFFF"));
}
if(i1 == 1){
wer1.setImageResource(itemsIcon.getResourceId(i, -1));
} else if(i1 == 2){
wer2.setImageResource(itemsIcon.getResourceId(i, -1));
} else if(i1 == 3){
wer3.setImageResource(itemsIcon.getResourceId(i, -1));
} else if(i1 == 4){
wer4.setImageResource(itemsIcon.getResourceId(i, -1));
}
return rootView;
}
但ImageView
背景不会改变!我在CardViews
内RelativeLayout
和RelativeLayout
内ImageView
GetOpenFilename
。
答案 0 :(得分:0)
请分享xml文件。也许你没有为xml
中的ImageView设置背景答案 1 :(得分:0)
每个onClick侦听器只是在数组中切换值。我怀疑你真正想要的是在每个处理程序中调用setBackground颜色代码。
从您的代码中,我认为您要做的是:
无论点击哪个按钮 - 将其背景颜色从白色更改为#42A5F5。
对于未单击的其他三个按钮,请将背景颜色更改为白色。
我不知道你班级的名字是什么(我将其称为" YourClass")。但要制作4个ImageViews成员变量。
class YourClass extends Fragment // I'm guessing this is the declaration, it doesn't matter - use whatever you have now
{
ImageView _wer1;
ImageView _wer2;
ImageView _wer3;
ImageView _wer4;
然后在onCreateView中,将这些成员变量中的每一个准确分配给您分配局部变量的位置:
_wer1 = (ImageView) rootView.findViewById(R.id.imageView);
_wer2 = (ImageView) rootView.findViewById(R.id.imageView2);
_wer3 = (ImageView) rootView.findViewById(R.id.imageView23);
_wer4 = (ImageView) rootView.findViewById(R.id.imageView43);
现在设置每个点击侦听器以调用" ToggleBackgroundColors"。请注意,在每个回调处理程序中传递给此函数的索引值不同。
_wer1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
YourClass.this.ToggleBackgroundColors(0);
}
});
_wer2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
YourClass.this.ToggleBackgroundColors(1);
}
});
_wer3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
YourClass.this.ToggleBackgroundColors(2);
}
});
_wer4.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
YourClass.this.ToggleBackgroundColors(3);
}
});
然后实现ToggleBackgroundColors:
void ToggleBackgroundColors(int which)
{
int highlight = Color.parseColor("#42A5F5");
ImageView [] views = {_wer1, _wer2, _wer3, _wer4};
for (int x = 0; x < views.length; x++)
{
int background = (which == x) ? highlight : Color.WHITE;
views[x].setBackgroundColor(background);
}
}
答案 2 :(得分:0)
在onClickListener中,您还可以在单击它时在imageView上设置colorFilter。
请考虑使用onTouchListener,但是当您触摸按钮而不是单击它时,您希望imageView更改颜色。
ImageView iv = (ImageView)findViewById(resIdOfImageToFilter);
iv.setColorFilter(Color.RED, PorterDuff.Mode.SRC_ATOP);