Why can't I see ImageView in xml?

In xml, ImageView is not a button, it's just for image viewing, but I don't know why I can't see it.

Linear Layout is acting as a button, covering the image view and the text view below it.

At the Android studio,

You can see it well, but if you actually turn it around (Amulex)

It pops up like this.

The text view above is right that I can't see it because I touched something in the Java file, but the image view doesn't have any function, so I don't know if you can see it.

Just in case, I'll put the xml sauce on the part with the image view.

...
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:orientation="horizontal"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/linearLayout2">

        <LinearLayout
            android:id="@+id/setting_btn_check"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:onClick="onClick"
            android:orientation="vertical">

            <ImageView
                android:layout_width="40dp"
                android:layout_height="40dp"
                app:srcCompat="@drawable/icon_btn_ok" />

            <TextView
                android:id="@+id/textView24"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="OK" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/setting_btn_cancel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:gravity="center"
            android:layout_marginLeft="120dp"
            android:orientation="vertical">

            <ImageView
                android:layout_width="40dp"
                android:layout_height="40dp"
                app:srcCompat="@drawable/icon_btn_delete_circle" />

            <TextView
                android:id="@+id/textView25"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Cancel" />
        </LinearLayout>
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

Please let me know if you know the reason.

android

2022-09-20 20:14

2 Answers

Try the android:src property instead of the app:srcCompat property.

The app:srcCompat property is a property of the AppCompat library, so if Activity does not extend AppCompatActivity.

2022-09-20 20:14

If you're going to do it with a button, instead of ImageView, use ImageButton Try android:src = "@drawable/icon_btn_delete_circle" If the size of the image file is larger than the image view, the image view is truncated We recommend adding android:scaleType="fitXY".

2022-09-20 20:14

If you have any answers or tips

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