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Create Layout Resource Programmatically Kotlin Android

Tags:

android

android-layout

android-studio

kotlin

I'm having problems trying to make this Layout totally programmatically, every time the process run end without success and the app crashes.

The Part of XML im trying to create programmatically is it :

<LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <ImageView
            android:id="@+id/idImagenPlay0"
            android:layout_width="62dp"
            android:layout_height="54dp"
            android:layout_marginRight="10dp"
            android:layout_marginTop="15dp"
            android:src="@drawable/ic_action_play" />
        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <TextView
                android:id="@+id/idNombre0"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="10dp"
                android:text="Description"
                android:textSize="25sp"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/idInfo0"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="15dp"
                android:layout_marginRight="10dp"
                android:text="Title" />

        </LinearLayout>

        <ImageView
            android:id="@+id/idImagenShare0"
            android:layout_width="54dp"
            android:layout_height="48dp"
            android:layout_alignParentRight="true"
            android:layout_marginRight="10dp"
            android:layout_marginTop="15dp"
            android:src="@drawable/ic_action_share" />
        </RelativeLayout>
    </LinearLayout>

I'm trying to recreate it with the following kotlin code:

fun createXmlElement(title:String,description:String){
    val parent = LinearLayout(this)
    parent.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    parent.orientation = LinearLayout.HORIZONTAL

    //children of parent linearlayout
    val iv = ImageView(this)
    val lp = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lp.setMargins(0, 11, 7, 0)
    iv.setLayoutParams(lp)
    iv.setImageResource(R.drawable.ic_action_play)
    iv.getLayoutParams().height = 40;
    iv.getLayoutParams().width = 46;

    parent.addView(iv); // lo agregamos al layout

    val relativeP = RelativeLayout(this)
    relativeP.layoutParams = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
            RelativeLayout.LayoutParams.MATCH_PARENT)

    val linearCH = LinearLayout(this)
    linearCH.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)
    // TextView1
    val tv1 = TextView(this)
    val lptv1 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lptv1.setMargins(0, 7, 0, 0)

    tv1.setLayoutParams(lptv1)
    tv1.setText(title) // nombre de la musica
    tv1.setTextSize(TypedValue.COMPLEX_UNIT_SP,25F)
    tv1.setTypeface(null, Typeface.BOLD);

    // TextView2
    val tv2 = TextView(this)
    val lptv2 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lptv2.setMargins(0, 11, 7, 0)

    tv2.setLayoutParams(lptv1)
    tv2.setText(description) // Descripcion de la musica
    tv2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25F)
    tv2.setTypeface(null, Typeface.BOLD);

    linearCH.addView(tv1)
    linearCH.addView(tv2)

    relativeP.addView(linearCH)

    // last ImageView
    val iv2 = ImageView(this)
    val lpiv2 = RelativeLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lpiv2.setMargins(0, 11, 7, 0)
    lpiv2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT)
    iv2.setLayoutParams(lpiv2)
    iv2.setImageResource(R.drawable.ic_action_share)
    iv2.getLayoutParams().height = 40;
    iv2.getLayoutParams().width = 46;


    parent.addView(iv)
    parent.addView(relativeP)
    parent.addView(iv2)


}

This is the error I'm getting in logcat

04-27 10:51:01.224 6973-6973/com.klystru.app.appE/AndroidRuntime: FATAL EXCEPTION: main
Process: com.klystru.app.app, PID: 6973
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.klystru.app.app/com.klystru.app.app.MainActivity}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2583)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2665)
    at android.app.ActivityThread.-wrap11(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1499)
    at android.os.Handler.dispatchMessage(Handler.java:111)
    at android.os.Looper.loop(Looper.java:207)
    at android.app.ActivityThread.main(ActivityThread.java:5765)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679)
 Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
    at android.view.ViewGroup.addViewInner(ViewGroup.java:4453)
    at android.view.ViewGroup.addView(ViewGroup.java:4281)
    at android.view.ViewGroup.addView(ViewGroup.java:4222)
    at android.view.ViewGroup.addView(ViewGroup.java:4195)
    at com.klystru.app.app.MainActivity.createXmlElement(MainActivity.kt:284)
    at com.klystru.app.app.MainActivity.onCreate(MainActivity.kt:121)
    at android.app.Activity.performCreate(Activity.java:6309)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1113)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2530)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2665) 
    at android.app.ActivityThread.-wrap11(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1499) 
    at android.os.Handler.dispatchMessage(Handler.java:111) 
    at android.os.Looper.loop(Looper.java:207) 
    at android.app.ActivityThread.main(ActivityThread.java:5765) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:679) 

I still research what it can be, I'm suspecting it may be wrong LayoutParams, but it's not really clear about how to set up correctly those resources programmatically.

Thanks in advance.

PD: If I found something I will update.

Any help will be really welcome!

UPDATE 1.0:

Ok following the logcat I have to call removeView in child's parent, but I don't know exactly where. I am looking for that.

like image 203
klys Avatar asked Apr 27 '18 15:04

klys

1 Answers

Ok the solution is as following:

Just need to add removeAllView on all parents before adding the childs

protected fun createXmlElement(title:String,description:String){
    val parent = LinearLayout(this)
    parent.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    parent.orientation = LinearLayout.HORIZONTAL



    //children of parent linearlayout
    val iv = ImageView(this)
    val lp = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lp.setMargins(0, 11, 7, 0)
    iv.setLayoutParams(lp)
    iv.setImageResource(R.drawable.ic_action_play)
    iv.getLayoutParams().height = 40
    iv.getLayoutParams().width = 46


    parent.addView(iv); // lo agregamos al layout

    val relativeP = RelativeLayout(this)
    relativeP.layoutParams = RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,
            RelativeLayout.LayoutParams.MATCH_PARENT)

    val linearCH = LinearLayout(this)
    linearCH.layoutParams = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)
    // TextView1
    val tv1 = TextView(this)
    val lptv1 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lptv1.setMargins(0, 7, 0, 0)

    tv1.setLayoutParams(lptv1)
    tv1.setText(title) // title
    tv1.setTextSize(TypedValue.COMPLEX_UNIT_SP,25F)
    tv1.setTypeface(null, Typeface.BOLD)

    // TextView2
    val tv2 = TextView(this)
    val lptv2 = LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lptv2.setMargins(0, 11, 7, 0)

    tv2.setLayoutParams(lptv1)
    tv2.setText(description) // description
    tv2.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25F)
    tv2.setTypeface(null, Typeface.BOLD)

    linearCH.removeAllViews()
    linearCH.addView(tv1)
    linearCH.addView(tv2)

    relativeP.removeAllViews()
    relativeP.addView(linearCH)

    // last ImageView
    val iv2 = ImageView(this)
    val lpiv2 = RelativeLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
            LinearLayout.LayoutParams.WRAP_CONTENT)

    lpiv2.setMargins(0, 11, 7, 0)
    lpiv2.addRule(RelativeLayout.ALIGN_PARENT_RIGHT)
    iv2.setLayoutParams(lpiv2)
    iv2.setImageResource(R.drawable.ic_action_share)
    iv2.getLayoutParams().height = 40
    iv2.getLayoutParams().width = 46


    parent.removeAllViews()
    parent.addView(iv)
    parent.addView(relativeP)
    parent.addView(iv2)

    val finalParent = this.findViewById(R.id.contenedor) as ViewGroup

    finalParent.addView(parent)
}

Thanks NSion, the error on logcat point to me the right direction!

like image 65
klys Avatar answered Sep 17 '22 18:09

klys
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