Do not show images of ImageView in real devices

Question

I want show image in ImageView, but don't show it. I use XML code and Java code but don't show. show in simulator but in real devices don't show.
tested on LG G2, HTC One X, Samsung Galaxy S3.

my xml code :

    <ImageView
    android:id="@+id/sms_dialog_header"
    android:layout_width="fill_parent"
    android:layout_height="150dp"
    android:layout_alignParentTop="true"
    android:scaleType="centerCrop"
    android:background="@drawable/show_sms_header" />

my java code :

        Dialog_Header_Img = (ImageView) findViewById(R.id.sms_dialog_header);
    Dialog_Header_Img.setImageResource(R.drawable.show_sms_header);

I used to be separated from each.

Please tell me the solution

Are you sure that `R.drawable.show_sms_header` exists and is correct? — JonasCz, Mar 09 '15 at 14:31
You have a background pre-defined in your XML and also setting the image as resource in java code? This shouldn't be the problem though. — Carnal, Mar 09 '15 at 14:33
@JonasCz : yes, you can see this link : http://s15.postimg.org/7no94xxy3/Dont_Show_In_Image_View.jpg — Mohammad, Mar 09 '15 at 14:35
@Carnal : I use Xml code and Java code! but don't show! I use this codes anywhere, but this where don't show — Mohammad, Mar 09 '15 at 14:38
@Mohammad try optimizing the resolution of the image and check — Fahim, Mar 09 '15 at 14:47
Try setting a color as a background to begin with in XML just to see if it is showing up. — Carnal, Mar 09 '15 at 14:51
@JonasCz , Fahim and more dear firend : Low resolution image, and the problem was fixed. — Mohammad, Mar 09 '15 at 14:59

score 1 · Accepted Answer · answered Mar 09 '15 at 14:45

1

First of all you should set image in xml by code:

android:src="@drawable/show_sms_header"

not by android:background, well you can set background to color or other image but your main image you should set by android:src

If you changing something about your image, leave first line in your code that you show, and delete second, if setting image is only thing you set, then you can delete both, because you set source of image in xml.

answered Mar 09 '15 at 14:45

miljon

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Like others guys are saying, try optimize your image. By create a few images in different drawable folder or change resolution of image pragmatically, for example like there: http://stackoverflow.com/questions/4837715/how-to-resize-a-bitmap-in-android – miljon Mar 09 '15 at 14:52

score 0 · Answer 2 · answered Mar 09 '15 at 14:53

The "src" attribute should be set to your drawable if you want it to be "centerCrop" correctly.

Check this out :

 <ImageView
    android:id="@+id/sms_dialog_header"
    android:layout_width="fill_parent"
    android:layout_height="150dp"
    android:layout_alignParentTop="true"
    android:scaleType="centerCrop"
    android:src="@drawable/show_sms_header" />

Make sure that your file, called "show_sms_header", is in your drawable ( /res/drawable) directory.

Do not show images of ImageView in real devices

2 Answers2