This is conflicting with android:allowBackup in the app manifest.

This error is shown:

Error:Execution failed for task ':app:processDebugManifest'.
> Manifest merger failed : Attribute application@allowBackup value=(false) from AndroidManifest.xml:16:9-36
    is also present at [com.wefika:flowlayout:0.4.0] AndroidManifest.xml:11:18-44 value=(true)
    Suggestion: add 'tools:replace="android:allowBackup"' to <application> element at AndroidManifest.xml:14:5-51:19 to override

Tested on N5 running Android M Preview 2.

Hi and thanks for all you have done. I used your FlowLayout mod, but it works perfectly on Android 2.2, 4.1 also, but on my N4 with 4.2.2, this is not displayed, and I do not know why. Precisely when displaying others views than Button.

Hope you can help !

Kind regards

Hey there love the layout, it's super handy. Although I have one problem:

When changing the visibility of the all layouts children to gone, then back to visible at a later time, the layout doesn't remeasure itself and stays flat. The layout is set to wrap_content so I can get it to hide, but it never returns. I'm using this functionality for a popup style of menu.

Any help would be greatly appreciated.

hi i get this error when i try to use the layout

06-07 22:18:36.327  21398-21398/ian.marxbrothers E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: ian.marxbrothers, PID: 21398
    java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to android.view.ViewGroup$MarginLayoutParams
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5454)
            at com.wefika.flowlayout.FlowLayout.onMeasure(FlowLayout.java:109)
            at android.view.View.measure(View.java:17430)
            at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:727)
            at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:463)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
            at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
            at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1083)
            at android.widget.LinearLayout.onMeasure(LinearLayout.java:615)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
            at android.support.v7.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:453)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
            at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1436)
            at android.widget.LinearLayout.measureVertical(LinearLayout.java:722)
            at android.widget.LinearLayout.onMeasure(LinearLayout.java:613)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5463)
            at android.widget.FrameLayout.onMeasure(FrameLayout.java:430)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2560)
            at android.view.View.measure(View.java:17430)
            at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2001)
            at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1166)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1372)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1054)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5779)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
            at android.view.Choreographer.doCallbacks(Choreographer.java:580)
            at android.view.Choreographer.doFrame(Choreographer.java:550)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5221)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

I want to add some features to FlowLayout so I create a custom class and extends it from FlowLayout. then I need to instantiate it and add it to FrameLayout with addView. Is this possible or I should only use xml? I tried and nothing appeared in my screen. Thanks in advanced.

It seems like in some circumstances, FlowLayouts with android:layout_height="wrap_content" disappear when nested inside ScrollViews.

The example below does not display properly, either on the device or in the Android Studio layout editor - the FlowLayout is hidden (looks like it has height 0). If the FlowLayout is given android:layout_height="50dp", it works (but defeats the purpose...). If the outer ScrollView is removed, making the LinearLayout the root, it displays properly.

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin">


        <com.wefika.flowlayout.FlowLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="start|top"
            android:minHeight="50dp">

            <Button
                android:id="@+id/button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="New Button" />

            <Button
                android:id="@+id/button1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="New Button" />

            <Button
                android:id="@+id/button2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="New Button" />

            <Button
                android:id="@+id/button3"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="New Button" />
        </com.wefika.flowlayout.FlowLayout>


        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Hello world" />

    </LinearLayout>
</ScrollView>

I think I have found a bug when there is only one textview added from code to the layout with height= wrap_cotent, then layout will not show since the height is zero in onMeasure method.

Hi. First of all I would like to thank you such a great piece of code. Its really useful.

I have a concern. I want to show the children/items of FlowLayout with animation. All the items should not animate together instead they should animate one by one in the order of their position. I want to apply scale animation on items.

How can I achieve this? Please help me out

Refer this video for reference. https://material-design.storage.googleapis.com/publish/material_v_4/material_ext_publish/0B08MbvYZK1iNTGRLb2Zud2RUNFE/animation-meaningfultransitions-hierarchicaltiming-4do_large_xhdpi.webm

I'm generating badges to highlight awesome open source Android libraries. They are ranked based on how many top apps the library is used in. If you would like to include it, I've added it to the README. If not, no problem, just close this. Let me know if you have any questions. Cheers!

When a padding is applied to the actual flow layout, it appears to be ignored.

The children in the far left position in column show be laid out at paddingLeft / paddingTop start position.

<com.wefika.flowlayout.FlowLayout xmlns:android="http://schemas.android.com/apk/res/android" android:background="@drawable/navigation_drawer_group_row_secondary" android:layout_width="match_parent" android:layout_height="wrap_content" android:paddingTop="@dimen/margin_large" android:paddingRight="@dimen/margin_large" android:paddingLeft="@dimen/margin_large"> </com.wefika.flowlayout.FlowLayout>

Parallel builds. This project contains multiple modules. Parallel builds can improve the build speed by executing tasks in parallel. We can enable this feature by setting org.gradle.parallel=true.

Configuration on demand. Configuration on demand tells Gradle to configure modules that only are relevant to the requested tasks instead of configuring all of them. We can enable this feature by setting org.gradle.configureondemand=true.

gradle caching. Shared caches can reduce the number of tasks you need to execute by reusing outputs already generated elsewhere. This can significantly decrease build times. We can enable this feature by setting org.gradle.caching=true.

Gradle daemon. The Daemon is a long-lived process that help to avoid the cost of JVM startup for every build. Since Gradle 3.0, Gradle daemon is enabled by default. For an older version, you should enable it by setting org.gradle.daemon=true.

===================== If there are any inappropriate modifications in this PR, please give me a reply and I will change them.

I used Flowlayout in my application. Below is my code

<com.wefika.flowlayout.FlowLayout android:id="@+id/flow" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="start" />

then I adding the childview as buttons dynamically.Below is the code `FlowLayout ll = (FlowLayout)layout.findViewById(R.id.flow); for (int i = 0; i <= btnList.size; i++) {

          final Button btnTag = new Button(MainActivity.this); 
         btnTag.setId(3000 + i);
        FlowLayout.LayoutParams layoutParams = new FlowLayout.LayoutParams(
               FlowLayout.LayoutParams.WRAP_CONTENT,FlowLayout.LayoutParams.WRAP_CONTENT);
          layoutParams.setMargins(7,7,7,7);
          btnTag.setTextColor(Color.BLACK);

          btnTag.setText("#"+btnList.get(i).toString());
          ll.addView(btnTag,layoutParams)
      }`

1. Button width is not changing dynamically as per the text
2. How to decrease Padding between button border and its text. How to resolve the above issues? Below is my screenshot

        if(lp.width == LayoutParams.MATCH_PARENT) {
            childWidthMode = MeasureSpec.EXACTLY;
            childWidthSize -= (horizontalMargin);
        }
        // ****for  wrap_content condition 
        else if(lp.width == LayoutParams.WRAP_CONTENT){
            childWidthMode = MeasureSpec.AT_MOST;
            childWidthSize = sizeWidth-horizontalMargin-widthUsed;
        }

        else if(lp.width >= 0) {
            childWidthMode = MeasureSpec.EXACTLY;
            childWidthSize = lp.width;
        }

after: