Create dynamcally widget by java and without XML

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Hi to all
I have below xml code

   <android.support.constraint.ConstraintLayout 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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="MyPackage.MainActivity"
    tools:showIn="@layout/app_bar_main"
    android:id="@+id/content_main">


    <TextProgress
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textprogress_day"
        android:background="@drawable/layout_border">
    </TextProgress>


</android.support.constraint.ConstraintLayout>

I want to create dynamically TextProgerss(My widget)
without xml

pay attention to below code

public class TextProgress extends ConstraintLayout {
    private TextView mTextView;
    private ProgressBar mProgressBar;

    public TextProgress(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
        this.setBackgroundColor(Color.GREEN);

        initializeViews(context);
    }
.
.
.

What I have tried:

I tried below code

ConstraintLayout cl= (ConstraintLayout) findViewById(R.id.content_main);
        TextProgress tp=new TextProgress(this,null);
        ConstraintLayout.LayoutParams tpParams=new ConstraintLayout.LayoutParams(  ConstraintLayout.LayoutParams.MATCH_PARENT,ConstraintLayout.LayoutParams.WRAP_CONTENT);
        tp.setLayoutParams(tpParams);
        cl.addView(tp);

But MATCH_PARENT does not work right
and I don't know, how to create dynamically below atrribute
android:background="@drawable/layout_border"

Posted 9-Dec-17 23:21pm

kave2011

Updated 10-Dec-17 7:14am

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Comments

Richard MacCutchan 10-Dec-17 7:38am

The properties used in the XML can also be found as properties of the various objects in code. Check the documentation for the class you are referring to.

kave2011 10-Dec-17 8:09am

Exactly
But "MATCH_PARENT" doest not work right.

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kave2011 · Accepted Answer · 2017-12-10T04:05:00

I was able to solve part of the problem.
MATCH_PARENT problem solved look below code

ConstraintLayout cl= (ConstraintLayout) findViewById(R.id.content_main);
            TextProgress tp=new TextProgress(this,null);
            ConstraintLayout.LayoutParams tpParams=new ConstraintLayout.LayoutParams(
ConstraintLayout.LayoutParams.MATCH_PARENT,ConstraintLayout.LayoutParams.WRAP_CONTENT);
            tp.setLayoutParams(tpParams);
            cl.addView(tp);

    ConstraintSet set = new ConstraintSet();

    set.constrainWidth(tp.getId(),ConstraintSet.MATCH_CONSTRAINT);
    set.constrainHeight(tp.getId(),ConstraintSet.WRAP_CONTENT);
    set.connect(tp.getId(), ConstraintSet.LEFT,
            ConstraintSet.PARENT_ID, ConstraintSet.LEFT);
    set.connect(tp.getId(), ConstraintSet.RIGHT,
            ConstraintSet.PARENT_ID, ConstraintSet.RIGHT);
        set.applyTo(cl);

the border problem is solved in Here[^]