My XML File does not display anything

Question

I dont understand Why nothing appears on the display. I can see the Button and the ImageView (zauberer) but otherwise nothing.. can someone help me?

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/halbtransparent">


    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:srcCompat="@drawable/dialoghintergrund"
        android:id="@+id/willdialog"
        android:layout_margin="20dp" />


    <ImageView
        android:scaleType="fitXY"
        android:id="@+id/zauberer"
        android:layout_marginTop="40dp"
        android:layout_marginLeft="50dp"
        android:layout_marginStart="50dp"
        app:srcCompat="@drawable/zaubererdialoghg"
        android:layout_height="55dp"
        android:layout_width="43dp" />

    <ImageButton
        android:id="@+id/btn_verstanden"
        android:scaleType="fitXY"
        android:layout_width="130dp"
        android:layout_marginTop="410dp"
        android:layout_gravity="center_horizontal"
        android:background="#00000000"
        android:layout_height="50dp"
        app:srcCompat="@drawable/btn_verstanden"/>

I think your problem is `srcCompat` as said in this link http://stackoverflow.com/questions/40624554/android-what-is-the-difference-between-appsrccompat-and-androidsrc — Vivek Mishra, Mar 20 '17 at 07:37

score 1 · Answer 1 · answered Mar 20 '17 at 07:38

1

Nothing is displayed in Activity or Android Studio? Have you closed the Framelayout tag? try to use Relativelayout. Make sure you have setContentView in your Activity.

answered Mar 20 '17 at 07:38

Ali Akhgar

101
1
10

score 1 · Answer 2 · answered Mar 20 '17 at 07:42

1

This happens because child layouts in FrameLayout overlap each other and the child written at the bottom is drawn over the others. Use LinearLayout with orientation set to vertical to resolve the problem.

answered Mar 20 '17 at 07:42

Harsh Ganatra

411
3
8

rafsanahmad007 · Accepted Answer · 2017-03-20T08:54:35.813

Couple of suggestion:

fill_parent is deprecated use match_parent
use android:src instead of app:srcCompat
you are using static Dp values android:layout_marginTop="410dp" which will be varied in different devices according to pixel density.

use layout_weight , weightSum , adJustViewBounds , Gravity to align your views..

Best practice to use different size drawable iamges in your mdpi , hdpi , xhdpi etc folder.

Try this:

<LinearLayout 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"
    android:background="@color/colorPrimary"
    android:orientation="vertical">


    <ImageView
        android:id="@+id/willdialog"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="20dp"
        android:src="@mipmap/ic_launcher" />


    <ImageView
        android:id="@+id/zauberer"
        android:layout_width="43dp"
        android:layout_height="55dp"
        android:layout_marginLeft="50dp"
        android:layout_marginStart="50dp"
        android:layout_marginTop="40dp"
        android:scaleType="fitXY"
        android:src="@mipmap/ic_launcher" />

    <ImageButton
        android:id="@+id/btn_verstanden"
        android:layout_width="130dp"
        android:layout_height="50dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="100dp"
        android:background="#00000000"
        android:scaleType="fitXY"
        android:src="@mipmap/ic_launcher" />

</LinearLayout>

Okay thank you! When i use now android:src must i change in my Java Activity now "AppCombatActivity" to "Activity" ? Or is this no matter? — jordy, Mar 20 '17 at 08:55
no it is not necessary...you can still use `AppCompatActivity` in code — rafsanahmad007, Mar 20 '17 at 08:56
When i want to change android:background to android:src in my xml is the background transparent — jordy, Mar 20 '17 at 09:03
`android:src` is for imageview or imagebuttons... if u want to set transperant background use: `android:background="@android:color/transparent"` — rafsanahmad007, Mar 20 '17 at 09:07
check your drawable image is it suitable for all screens? try to resize the image in hdpi, mdpi, xhdpi etc...folders — rafsanahmad007, Mar 20 '17 at 09:30

My XML File does not display anything

3 Answers3