Creating custom TextView programmatically

Question

I'm writing a chat app. I'm creating textviews, in code, for each chat. This involved the "addChat" method and the chatshape.xml pasted below. It all works perfectly except that the corners are not rounded on the textbox. The tv.setBackgroundResource(R.drawable.chatshape) is having no effect.

private void addChat(String chat, String when,  Boolean mine) 
{
    int leftMargin;
    TextView tv = new TextView(this);
    tv.setLayoutParams(new ViewGroup.LayoutParams(
            ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.MATCH_PARENT)); 

    tv.setTextSize(2,20);
    tv.setPadding(10, 4, 10, 4);
    tv.setBackgroundResource(R.drawable.chatshape);
    tv.setText(chat);
    if (mine) {
        leftMargin = 10;
        tv.setBackgroundResource(R.color.white);
        tv.setTextColor(Color.BLUE);
    }
    else {
        leftMargin = 25;
        tv.setBackgroundResource(R.color.gray);
        tv.setTextColor(Color.WHITE);
    }
    this.messageScroll.addView(tv);
    final ViewGroup.MarginLayoutParams lpt = (ViewGroup.MarginLayoutParams) tv.getLayoutParams();

    lpt.setMargins(leftMargin,4,10,4);

}

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

  <corners
         android:bottomRightRadius="20px" 
         android:bottomLeftRadius="20px" 
         android:topLeftRadius="20px" 
         android:topRightRadius="20px"/>
</shape>

Have you tried 9patch images? developer.android.com/tools/help/draw9patch.html — Chrome Penguin Studios
– Chrome Penguin Studios, Commented Jul 30, 2014 at 17:49
No, I had never heard of that. It really works great!! Thanks for the tip. — Dean Blakely
– Dean Blakely, Commented Jul 30, 2014 at 21:17

VegeOSplash · Accepted Answer · 2014-07-30 21:58:35Z

1

<corners android:radius="8dp" />

<solid android:color="#FFFFFF" />

<stroke
    android:width="1dp"
    android:color="#848482" />

  <padding
    android:bottom="3dp"
    android:left="3dp"
    android:right="3dp"
    android:top="3dp" />

it works ...!

answered Jul 30, 2014 at 21:58

VegeOSplash

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2 Comments

Dean Blakely Over a year ago

VegeOSplash: I'm giving you the benefit of the doubt and marking this as the answer but I'm not even going to try it after learning about 9Patch. It looks to be a way better solution for custom shapes and backgrounds.

VegeOSplash Over a year ago

Sure !. 9 Patch is a good Solution for Rounded Corner because if work in all Device without any distortion.Android itself take care of scale and resize the edges based on user device screen resolution and DPI

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