How to Set Layout_Gravity Programmatically

How to set layout_gravity programmatically?

Java

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT);
params.weight = 1.0f;
params.gravity = Gravity.TOP;

button.setLayoutParams(params);

Kotlin

val params = LinearLayout.LayoutParams(
    LinearLayout.LayoutParams.WRAP_CONTENT,
    LinearLayout.LayoutParams.WRAP_CONTENT
).apply {
    weight = 1.0f
    gravity = Gravity.TOP
}

For gravity values and how to set gravity check Gravity.

Basically, you should choose the LayoutParams depending on the parent. It can be RelativeLayout, LinearLayout etc...

Programmatically set layout_gravity for a FrameLayout's Child?

The layout_gravity attribute lands on the FrameLayout.LayoutParams, not on the view itself. You'll need something like:

mCameraPreview = new CameraPreview(this, recordMode);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview_wrapper);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
    FrameLayout.LayoutParams.MATCH_PARENT, 
    FrameLayout.LayoutParams.MATCH_PARENT, 
    Gravity.BOTTOM);
preview.addView(mCameraPreview, params);

Android - Set Layout_Gravity programmatically for LinearLayout

Do somethings like this :

   LayoutParams lp = new LayoutParams();
   lp.gravity= Gravity.CENTER_HORIZONTAL; 
   myImg.setLayoutParams(lp);

UPDATE :
Another way to do this :

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
            params.weight = 1.0f;
            params.gravity = Gravity.CENTER;

            imageView.setLayoutParams(params);

How to set both gravity and layout gravity of a LinearLayout programatically

Short answer

Set gravity

linearLayout.setGravity(Gravity.CENTER);

Set layout gravity

// the LinearLayout's parent is a FrameLayout      
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(400, 400);
params.gravity = Gravity.TOP|Gravity.RIGHT;
linearLayout.setLayoutParams(params);

Background

Previously, I have explained the difference between 'gravity' and `layout_gravity' for views within a layout.

Setting the gravity of a LinearLayout itself changes the location of the views within it. Setting the layout_gravity of a LinearLayout changes how the LinearLayout is arranged within its parent layout.

This image shows a LinearLayout (brown) within a FrameLayout (white). The LinearLayout's gravity is set to center_horizontal and its layout_gravity is set to right|bottom.

Here is the xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <LinearLayout
        android:id="@+id/llExample"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_gravity="right|bottom"
        android:background="#e3e2ad"
        android:gravity="center_horizontal"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:background="#bcf5b1"
            android:text="TextView 1" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="100dp"
            android:layout_height="50dp"
            android:background="#aacaff"
            android:text="TextView 2" />

    </LinearLayout>

</FrameLayout>

Changing things programmatically

The following code shows how to change both the gravity and the layout_gravity of the LinearLayout.

public class LinearLayoutGravity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.linear_layout_gravity);

        // Change the gravity (not layout_gravity) of the LinearLayout
        LinearLayout ll = (LinearLayout) findViewById(R.id.llExample);
        ll.setGravity(Gravity.CENTER);

        // Change the layout_gravity (not gravity) of the LinearLayout      
        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(400, 400);
        params.gravity = Gravity.TOP|Gravity.RIGHT;
        ll.setLayoutParams(params);
    }
}

And here is the result:

See also

• RelativeLayout and LinearLayout with gravity: What is the effect?

Set gravity for LinearLayout programmatically

Remember that gravity sets the positioning of a view's children, while layout_gravity sets the positioning of a view within its parent. So in your case, you want to set the gravity of the LinearLayout, which can be done via member methods. You should also set the orientation.

Your run() method should look something like:

   public void run(){
        layout = new LinearLayout(activity);
        layout.setGravity(Gravity.BOTTOM);
        layout.setOrientation(LinearLayout.VERTICAL);

        layout.addView(adView);

        LinearLayout.LayoutParams lllp = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
        activity.addContentView(layout, lllp);

    }

Android : Set gravity of a LinearLayout programmatically

I think, you are looking for

LinearLayout one = new LinearLayout(this);

        one.setGravity(Gravity.BOTTOM | Gravity.CENTER);  //to show LinearLayout gravity

        Button myButton1 = new Button(this);
        one.addView(myButton1,
                    new LinearLayout.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        0));
        myButton1.setText("First");
        myButton1.setGravity(Gravity.CENTER);   //to show text gravity in button

        Button myButton2 = new Button(this);
        one.addView(myButton2,
                    new LinearLayout.LayoutParams(
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT,
                        0));
        myButton2.setText("Second");
        myButton2.setGravity(Gravity.CENTER);   //to show text gravity
        setContentView(one);

icicle is sometimes used as the name of the parameter.It's just a
placeholder for one of the formal parameters onCreate takes one Bundle parameter. It's up to you what to call it.

Some properties of LinearLayout https://stackoverflow.com/a/19065951/2826147

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