Question

早上好，我无法比较我在Android Studio中制作的Android应用程序中的多个Drawable。我已经在Internet上进行了搜索，但似乎找不到正确的分辨率。

用户单击图像时，必须检查以查看当前是否正在显示同一图像（R.drawable），该图像应该随机显示在imageView中。

加载Activity时，它将显示imageView内部数组中的随机图像。但是，当用户单击正确的对应图像时，它将不会比较两个Drawable。

用户单击imageView中的horizontal scroll layout时，必须检查以查看他们单击的imageView是否与所显示的相同。
< br /> 我也知道我正在比较imageView和Int

我已经考虑过只创建1个onClick方法来比较Drawable，但是不确定如何做到这一点。请任何人帮助，将不胜感激！

我的MainActivity：

public class MainActivity extends AppCompatActivity {

    public ImageView imageView;
    public Random random;
    public TextView textView;
    int easy[] = {R.drawable.img1, R.drawable.img2, R.drawable.img3};

    int hard[] = {R.drawable.img1, R.drawable.img2, R.drawable.img3,
            R.drawable.img4, R.drawable.img5, R.drawable.img6,
            R.drawable.img7};

    public ImageView imageView1;
    public ImageView imageView2;
    public ImageView imageView3;
    public ImageView imageView4;
    public ImageView imageView5;
    public ImageView imageView6;
    public ImageView imageView7;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        random = new Random();

        textView = (TextView) findViewById(R.id.textView);
        imageView = (ImageView) findViewById(R.id.imageView);

        imageView1 = (ImageView) findViewById(R.id.IMG1);
        imageView2 = (ImageView) findViewById(R.id.IMG2);
        imageView3 = (ImageView) findViewById(R.id.IMG3);
        imageView4 = (ImageView) findViewById(R.id.IMG4);
        imageView5 = (ImageView) findViewById(R.id.IMG5);
        imageView6 = (ImageView) findViewById(R.id.IMG6);
        imageView7 = (ImageView) findViewById(R.id.IMG7);

        int randomInt = random.nextInt(hard.length);
        imageView.setBackgroundResource(hard[randomInt]);

}

public void clickedIMG1(View view) {

    if (imageView.equals(R.drawable.img1)) {
        textView.setText("Image 1 is displayed");
    }
}

public void clickedIMG2(View view) {

    if (imageView.equals(R.drawable.img2)) {
        textView.setText("Image 2 is displayed");
    }
}

public void clickedIMG3(View view) {

    if (imageView.equals(R.drawable.img3)) {
        textView.setText("Image 3 is displayed");
    }
}

public void clickedIMG4(View view) {

    if (imageView.equals(R.drawable.img4)) {
        textView.setText("Image 4 is displayed");
    }
}

public void clickedIMG5(View view) {

    if (imageView.equals(R.drawable.img5)) {
        textView.setText("Image 5 is displayed");
    }
}

public void clickedIMG6(View view) {

    if (imageView.equals(R.drawable.img6)) {
        textView.setText("Image 6 is displayed");
    }
}

public void clickedIMG7(View view) {

    if (imageView.equals(R.drawable.img7)) {
        textView.setText("Image 7 is displayed");
    }
}
}

我的activity_main：

<android.widget.RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="210dp"
        android:layout_height="177dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="89dp"
        android:layout_marginTop="111dp"
        android:contentDescription="@string/funny_emoji"
        tools:layout_editor_absoluteX="120dp"
        tools:layout_editor_absoluteY="232dp" />

    <HorizontalScrollView
        android:layout_width="wrap_content"
        android:layout_height="205dp"
        android:layout_alignParentStart="true"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="54dp">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/IMG1"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:contentDescription="@string/funny_emoji"
                android:clickable="true"
                android:onClick="clickedIMG1"
                android:src="@drawable/img1" />

            <ImageView
                android:id="@+id/IMG2"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:contentDescription="@string/funny_emoji"
                android:clickable="true"
                android:onClick="clickedIMG2"
                android:src="@drawable/img2" />

            <ImageView
                android:id="@+id/IMG3"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:clickable="true"
                android:onClick="clickedIMG3"
                android:contentDescription="@string/funny_emoji"
                android:src="@drawable/img3" />

            <ImageView
                android:id="@+id/IMG4"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:contentDescription="@string/funny_emoji"
                android:onClick="clickedIMG4"
                android:src="@drawable/img4" />

            <ImageView
                android:id="@+id/IMG5"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:onClick="clickedIMG5"
                android:contentDescription="@string/funny_emoji"
                android:src="@drawable/img5" />

            <ImageView
                android:id="@+id/IMG6"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:onClick="clickedIMG6"
                android:contentDescription="@string/funny_emoji"
                android:src="@drawable/img6" />

            <ImageView
                android:id="@+id/IMG7"
                android:layout_width="50dp"
                android:layout_height="55dp"
                android:layout_marginLeft="5dp"
                android:onClick="clickedIMG7"
                android:contentDescription="@string/funny_emoji"
                android:src="@drawable/img7" />



        </LinearLayout>
    </HorizontalScrollView>

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="154dp"
        android:layout_marginTop="21dp"
        android:text="TextView" />

</android.widget.RelativeLayout>

Answer 1

您可以使用可绘制资源ID设置imageview标记，例如

imageView.setTag(hard[randomInt]);

设置背景资源后。

然后在比较时就可以做到

if (Integer.valueOf(imageView.getTag().toString) == R.drawable.img1){

} 
//same way compare with other images R.drawable.img2, R.drawable.img3

Answer 2

您可以从ImageView获得Drawable

Drawable myDrawable = iv.getDrawable();

OR

您可以比较ImageView中的Drawable

if(iv.getDrawable()==getResources().getDrawable(R.drawable.image1)){
    //do work here
}

您的情况

您可以通过

轻松进行比较

Drawable myDrawable = getResources().getDrawable(hard[randomInt]);

然后从drawable而不是ImageView进行比较

if(myDrawable==getResources().getDrawable(R.drawable.image1)){
    //do work here
}

无法在Java Android中比较Drawables

2 个答案: