Deprecated ⚠️⚠️⚠️

This project has stopped maintenance, now there is a better solution, please refer to ConstraintLayout

Android-RatioLayout

This is a specified proportion to the size of the Layout or View support library, with which you can easily set a fixed ratio of the size of the Layout or View, internal adaptive size calculation, completely abandon the code to calculate the size! If you have any questions in the course or suggestions, please send an e-mail to the following e-mail, thank you!

For more information please see the website

Screenshots

Android-RatioLayout with xml code

<net.soulwolf.widget.ratiolayout.widget.RatioFrameLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    app:datumRatio="datumWidth"
    app:widthRatio="16.0"
    app:heightRatio="9.0"
    android:layout_height="wrap_content">

    <net.soulwolf.widget.ratiolayout.widget.RatioImageView
        android:id="@+id/image2"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:datumRatio="datumWidth"
        app:widthRatio="16.0"
        app:heightRatio="7.0"
        android:scaleType="centerCrop"/>

    <net.soulwolf.widget.ratiolayout.widget.RatioTextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:textSize="25sp"
        android:textStyle="bold"
        android:gravity="center"
        app:datumRatio="datumWidth"
        app:widthRatio="16.0"
        android:background="@color/sample_text"
        app:heightRatio="7.0"
        android:text="RatioImageView/RatioTextView:16*7"
        android:textColor="@android:color/white"/>

</net.soulwolf.widget.ratiolayout.widget.RatioFrameLayout>

<LinearLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp"
    android:orientation="horizontal">

    <net.soulwolf.widget.ratiolayout.widget.RatioTextView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="@color/sample_primary"
        android:gravity="center"
        android:text="Square"
        android:textColor="@android:color/white"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layoutSquare="true"/>

    <net.soulwolf.widget.ratiolayout.widget.RatioView
        android:layout_width="15dp"
        android:layout_height="wrap_content"
        app:heightRatio="1"
        app:widthRatio="1"/>

    <net.soulwolf.widget.ratiolayout.widget.RatioTextView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="@color/sample_primary"
        android:gravity="center"
        android:text="AspectRatio:1.0"
        android:textColor="@android:color/white"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layoutAspectRatio="1"/>

</LinearLayout>

<net.soulwolf.widget.ratiolayout.widget.RatioRelativeLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    app:datumRatio="datumWidth"
    app:widthRatio="15.0"
    app:layout_marginTop="8dp"
    app:heightRatio="10.0"
    app:layout_height="wrap_content"/>
		

Android-RatioLayout with java code

RatioFrameLayout ratioFrameLayout = new RatioFrameLayout(context);
ratioFrameLayout.setRatio(datumRatio,widthRatio,heightRatio);
ratioFrameLayout.setSquare(square);
ratioFrameLayout.setAspectRatio(aspectRatio);

Attr params info

attrName	Explanation
datumRatio	This parameter indicates the ratio is calculated based on Width Or Height! Default auto
widthRatio	This parameter indicates the proportion of the size Width
heightRatio	This parameter indicates the proportion of the size Height
layoutSquare	This parameter indicates the proportion of the square
layoutAspectRatio	This parameter indicates the proportion of the (width / height)

Implementing View!

• RatioAbsoluteLayout
• RatioLinearLayout
• RatioButton
• RatioCheckBox
• RatioCheckedTextView
• RatioEditText
• RatioFrameLayout
• RatioGridLayout
• RatioImageButton
• RatioImageView
• RatioProgressBar
• RatioRadioButton
• RatioRadioGroup
• RatioRelativeLayout
• RatioSpace
• RatioTableLayout
• RatioTextView
• RatioGridView
• RatioListView
• RatioRecyclerView
• RatioCardView

Custom

public class RatioFrameLayout extends FrameLayout implements RatioMeasureDelegate {

    private RatioLayoutDelegate mRatioLayoutDelegate;


    public RatioFrameLayout(Context context) {
        super(context);
    }

    public RatioFrameLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
        mRatioLayoutDelegate = RatioLayoutDelegate.obtain(this, attrs);
    }

    public RatioFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        mRatioLayoutDelegate = RatioLayoutDelegate.obtain(this, attrs, defStyleAttr);
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public RatioFrameLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        mRatioLayoutDelegate = RatioLayoutDelegate.obtain(this, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (mRatioLayoutDelegate != null) {
            mRatioLayoutDelegate.update(widthMeasureSpec, heightMeasureSpec);
            widthMeasureSpec = mRatioLayoutDelegate.getWidthMeasureSpec();
            heightMeasureSpec = mRatioLayoutDelegate.getHeightMeasureSpec();
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

    @Override
    public void setRatio(RatioDatumMode mode, float datumWidth, float datumHeight) {
        if (mRatioLayoutDelegate != null) {
            mRatioLayoutDelegate.setRatio(mode, datumWidth, datumHeight);
        }
    }

    @Override
    public void setSquare(boolean square) {
        if (mRatioLayoutDelegate != null) {
            mRatioLayoutDelegate.setSquare(square);
        }
    }

    @Override
    public void setAspectRatio(float aspectRatio) {
        if (mRatioLayoutDelegate != null) {
            mRatioLayoutDelegate.setAspectRatio(aspectRatio);
        }
    }
}

Maven

<dependency>
  <groupId>net.soulwolf.widget</groupId>
  <artifactId>ratiolayout</artifactId>
  <version>2.1.0</version>
  <type>pom</type>
</dependency> ## Gradle
allprojects {
   repositories {
      jcenter()
   }
}

compile 'net.soulwolf.widget:ratiolayout:2.1.0'

Developed by

Amphiaraus - amphiarause@gmail.com

License

Copyright 2015 The Android Open Source Project for Android-RatioLayout

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.