Question

这是我的情况。我定义了一个xml文件，其中包含2个表格布局，每个布局有1个表格行，每行有3个相对布局，每个相对布局有3个图像视图。

当我点击它时，我想降低1相对布局的所有图像视图上的alpha，所以我使用这段代码：

for(int i = 0;i<randStupac.getChildCount();i++)   
        {
            ImageView image =(ImageView)randStupac.getChildAt(i);
            image.setAlpha(100);
        }

randStupac是一个包含3个imageViews的相对布局，但由于某些原因，这不仅会改变那些3个ImageView，还会随机改变来自其他相对布局的其他图像，我不希望这样。

我用logcat检查了childcount为3。

所以这意味着在3次迭代中没有3次，但是ImageViews中3位以上的随机数发生了变化。

那么ony1 plz能帮助我改变我需要改变的图像吗？

这是xml文件：

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout android:layout_width="fill_parent"
    android:layout_height="fill_parent" android:paddingBottom="10dp"
    android:paddingTop="50dp">
    <TableLayout android:layout_height="wrap_content"
        android:layout_width="fill_parent" android:id="@+id/TableLayoutTijelo">
        <TableRow android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:layout_marginLeft="120dp"
            android:id="@+id/TableRowTijelo">
            <RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacTijelo1" android:layout_height="wrap_content"
                android:onClick="clickTijelo">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:id="@+id/SlikaTijelo1" android:src="@drawable/tresnja"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:layout_below="@+id/SlikaTijelo1" android:id="@+id/SlikaTijelo4" android:src="@drawable/tresnja"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:layout_below="@+id/SlikaTijelo4"
                    android:id="@+id/SlikaTijelo7" android:src="@drawable/tresnja"></ImageView>
            </RelativeLayout>
            <RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacTijelo2" android:layout_height="wrap_content"
                android:onClick="clickTijelo">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:id="@+id/SlikaTijelo2"
                    android:src="@drawable/jabuka"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:layout_below="@+id/SlikaTijelo2" android:id="@+id/SlikaTijelo5" android:src="@drawable/lubenica"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:layout_below="@+id/SlikaTijelo5"
                    android:id="@+id/SlikaTijelo8" android:src="@drawable/tresnja"></ImageView>
            </RelativeLayout>
            <RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacTijelo3" android:layout_height="wrap_content"
                android:onClick="clickTijelo">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:id="@+id/SlikaTijelo3" android:src="@drawable/lubenica"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:layout_below="@+id/SlikaTijelo3"
                    android:id="@+id/SlikaTijelo6" android:src="@drawable/ribizli"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:layout_below="@+id/SlikaTijelo6"
                    android:id="@+id/SlikaTijelo9" android:src="@drawable/lubenica"></ImageView>
            </RelativeLayout>
        </TableRow>
        <TextView android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:id="@+id/brojacBod"
            android:text="9999999" android:layout_marginTop="50dp"
            android:gravity="center" android:layout_marginRight="250dp"
            android:layout_marginLeft="7dp"></TextView>
        <TextView android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:text="9999999"
            android:id="@+id/brojacPokusaj" android:layout_marginTop="110dp"
            android:layout_marginLeft="35dp"></TextView>
    </TableLayout>
    <TableLayout android:layout_height="wrap_content"
        android:layout_alignParentBottom="true" android:layout_width="fill_parent"
        android:id="@+id/TableLayoutRandom">
        <TableRow android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:layout_marginLeft="120dp"
            android:id="@+id/TableRowRandom">
            <RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacRandom1" android:layout_height="wrap_content"
                android:onClick="clickRandom">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:id="@+id/SlikaRandom1"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:layout_below="@+id/SlikaRandom1" android:id="@+id/SlikaRandom4"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:layout_below="@+id/SlikaRandom4" android:id="@+id/SlikaRandom7"></ImageView>
            </RelativeLayout>
            <RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacRandom2" android:layout_height="wrap_content"
                android:onClick="clickRandom">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:id="@+id/SlikaRandom2" android:src="@drawable/icon"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:layout_below="@+id/SlikaRandom2" android:id="@+id/SlikaRandom5"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:layout_below="@+id/SlikaRandom5" android:id="@+id/SlikaRandom8"></ImageView>
            </RelativeLayout>
            <RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacRandom3" android:layout_height="wrap_content"
                android:onClick="clickRandom">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:id="@+id/SlikaRandom3"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:layout_below="@+id/SlikaRandom3" android:id="@+id/SlikaRandom6"></ImageView>
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content" android:src="@drawable/icon"
                    android:layout_below="@+id/SlikaRandom6" android:id="@+id/SlikaRandom9"></ImageView>
            </RelativeLayout>
        </TableRow>
        <LinearLayout android:id="@+id/linearLayout1"
            android:layout_width="wrap_content" android:layout_height="wrap_content"></LinearLayout>
    </TableLayout>
</RelativeLayout>
<ImageView android:layout_width="wrap_content" android:src="@drawable/icon"
    android:layout_height="wrap_content" android:layout_marginTop="75dp"
     android:id="@+id/comboDouble"></ImageView>
<ImageView android:layout_height="wrap_content"
    android:layout_width="wrap_content" android:src="@drawable/icon"
    android:layout_marginTop="120dp" android:id="@+id/comboMulti"></ImageView>
<RelativeLayout android:layout_width="wrap_content"
    android:layout_height="wrap_content" android:id="@+id/ReklamaIgra">
</RelativeLayout>

这是“点击”功能：;

    public void clickRandom(final View view)
{
    if(odabrano == true)
    {
        switch(stupacRandom)
        {
            case 1:randStupac = (RelativeLayout)findViewById(R.id.StupacRandom1);break;
            case 2:randStupac = (RelativeLayout)findViewById(R.id.StupacRandom2);break;
            case 3:randStupac = (RelativeLayout)findViewById(R.id.StupacRandom3);break;
        }
        randStupac.startAnimation(animacijaDeselect);
        for(int i = 0;i<randStupac.getChildCount();i++)
        {
            ImageView slika1 =(ImageView)randStupac.getChildAt(i);
            slika1.setAlpha(puno);
        }
    }
    switch(view.getId())
    {
        case R.id.StupacRandom1 :
        {
            stupacRandom = 1;
            randStupac = (RelativeLayout)findViewById(R.id.StupacRandom1);
            break;
        }
        case R.id.StupacRandom2 :
        {
            stupacRandom = 2;
            randStupac = (RelativeLayout)findViewById(R.id.StupacRandom2);
            break;
        }
        case R.id.StupacRandom3 :
        {
            stupacRandom = 3;
            randStupac = (RelativeLayout)findViewById(R.id.StupacRandom3);
            break;
        }
    }

在我编写函数之前，我知道，为整个类声明RelativeLayout randStupac。

很抱歉，我写的字是克罗地亚语

Answer 1

删除所有代码并添加此

public void clickRandom(final View view) {
    for(int i = 0; i < view.getChildCount(); i++) {
        ImageView slika1 = (ImageView) view.getChildAt(i);
        slika1.setAlpha(100);
    }
}

或者你可以为所有ImagesViews使用相同的id（我的意思是imageView1，imageView2和imageView3）

<RelativeLayout android:layout_width="wrap_content"
                android:id="@+id/StupacRandom3"
                android:layout_height="wrap_content"
                android:onClick="clickRandom">
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:src="@drawable/icon"
                    android:id="@+id/imageView1" />
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:src="@drawable/icon"
                    android:layout_below="@+id/imageView2"
                    android:id="@+id/SlikaRandom6" />
                <ImageView android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:src="@drawable/icon"
                    android:layout_below="@+id/imageView3"
                    android:id="@+id/SlikaRandom9" />
</RelativeLayout>

并写下这样的东西

public void clickRandom(final View view) {
    ImageView slika1 = (ImageView) view.findViewById(R.id.imageView1);
    slika1.setAlpha(100);
    ImageView slika2 = (ImageView) view.findViewById(R.id.imageView2);
    slika2.setAlpha(100);
    ImageView slika3 = (ImageView) view.findViewById(R.id.imageView3);
    slika3.setAlpha(100);
}

为什么1个以编程方式定义的ImageView会更改XML中定义的多个ImageView？

1 个答案: