Android：onclick无效

Question

我正在我的应用程序中使用ImageAdapter，我希望隐藏文本视图下面的图像。但是setInvisibility不起作用。 El问题与信息无关。观点有问题吗......我需要帮助

XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<imagenes.TouchImageView
    android:id="@+id/imgDisplay"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:scaleType="fitCenter" />

<TextView 
    android:id="@+id/textoInfoImagen"
    android:layout_alignParentBottom="true"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal"
    android:background="@color/grisTransparente"
    android:paddingTop="3dp"
    android:paddingBottom="3dp"
    android:text=""
    android:textSize="13sp"
    android:textColor="@color/gris"/>

</RelativeLayout>

JAVA

public class FullScreenImageAdapter extends PagerAdapter implements OnClickListener {

private Activity _activity;
private LayoutInflater inflater;
Context context;

String[] listaImagenes;
String monumento;

TouchImageView imgDisplay;
TextView info;

boolean invisible = false;

public FullScreenImageAdapter(Activity activity, Context context, String monumento) throws IOException {
    this._activity = activity;
    this.context = context;
    this.monumento = monumento;
    listaImagenes = context.getAssets().list(this.monumento);
}

@Override
public int getCount() {
    return listaImagenes.length;
}

@Override
public boolean isViewFromObject(View view, Object object) {
    return view == ((RelativeLayout) object);
}

@Override
public Object instantiateItem(ViewGroup container, int position) {

    inflater = (LayoutInflater) _activity
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    final View viewLayout = inflater.inflate(R.layout.ampliar_imagen, container,
            false);

    imgDisplay = (TouchImageView) viewLayout.findViewById(R.id.imgDisplay);
    imgDisplay.setMaxZoom(4);

    Bitmap bitmap = cargarImagen(monumento, position);
    imgDisplay.setImageBitmap(bitmap);

    info = (TextView) viewLayout.findViewById(R.id.textoInfoImagen);
    info.setText((position + 1) + " de " + listaImagenes.length +
            "\n" + InfoImagenes.devolverInfoImagenes(monumento, position));

    imgDisplay.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {

            Toast.makeText(context, "click", Toast.LENGTH_SHORT).show();
            if(invisible == true) {
                invisible = false;
                info.setVisibility(View.VISIBLE);
            } else {
                invisible = true;
                info.setVisibility(View.INVISIBLE);
            }
        }
    });

    ((ViewPager) container).addView(viewLayout);

    return viewLayout;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    ((ViewPager) container).removeView((RelativeLayout) object);

}

public Bitmap cargarImagen(String monumento, int position) {

    Bitmap bitmap = null;
    InputStream is;

    try {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inPreferredConfig = Bitmap.Config.ARGB_8888;

            is = context.getAssets().open(monumento + "/" + listaImagenes[position]);
            bitmap = BitmapFactory.decodeStream(is, null, options);

    } catch (IOException e) {

    }

    return bitmap;
}

@Override
public void onClick(View v) {
}

}

Answer 1

info是您的适配器的成员变量，并且不一定是被点击的相同视图 - 您覆盖每个项目的变量。

onClick()附带View v参数，即被点击的视图 - 在其上调用setVisibility()。

此外，invisible是一个成员变量，具有与上述相同的问题。如果您想检查视图的当前可见性，请致电v.getVisibility()。

Answer 2

将 .java 类中的ImageView＆＃39; s（imgDisplay）类型用作ImageView而不是TouchImageView