Android: floating action button

This commit is contained in:
jendib 2014-11-26 02:08:20 +01:00
parent 824e37b8ea
commit 5666d9b8b5
6 changed files with 285 additions and 2 deletions

View File

@ -98,6 +98,7 @@
<orderEntry type="jdk" jdkName="Android API 21 Platform" jdkType="Android SDK" /> <orderEntry type="jdk" jdkName="Android API 21 Platform" jdkType="Android SDK" />
<orderEntry type="sourceFolder" forTests="false" /> <orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" exported="" name="recyclerview-v7-21.0.0" level="project" /> <orderEntry type="library" exported="" name="recyclerview-v7-21.0.0" level="project" />
<orderEntry type="library" exported="" name="fab-0.0.5" level="project" />
<orderEntry type="library" exported="" name="android-easing-1.0.3" level="project" /> <orderEntry type="library" exported="" name="android-easing-1.0.3" level="project" />
<orderEntry type="library" exported="" name="support-annotations-21.0.2" level="project" /> <orderEntry type="library" exported="" name="support-annotations-21.0.2" level="project" />
<orderEntry type="library" exported="" name="imagezoom-1.0.5" level="project" /> <orderEntry type="library" exported="" name="imagezoom-1.0.5" level="project" />

View File

@ -36,4 +36,5 @@ dependencies {
compile 'com.loopj.android:android-async-http:1.4.6' compile 'com.loopj.android:android-async-http:1.4.6'
compile 'it.sephiroth.android.library.imagezoom:imagezoom:1.0.5' compile 'it.sephiroth.android.library.imagezoom:imagezoom:1.0.5'
compile 'de.greenrobot:eventbus:2.4.0' compile 'de.greenrobot:eventbus:2.4.0'
compile 'com.shamanland:fab:0.0.5'
} }

View File

@ -0,0 +1,268 @@
package com.sismics.docs.ui.view;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.LayerDrawable;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.ImageButton;
import android.widget.ImageView;
/**
* A circular button made of paper that lifts and emits ink reactions on press.
* <p/>
* This widget supports two sizes: {@link #SIZE_NORMAL} and {@link #SIZE_MINI}
* according to <a href="http://www.google.com/design/spec/patterns/promoted-actions.html">Promoted Actions</a> pattern.
* <p/>
* Like an {@link ImageView} this widget require {@code android:src} attribute.
* According to official documentation this drawable should be not more than {@code 24dp}.
* <p/>
* Use theme to customize all floating buttons in your app:
* <p/>
* Declare own style:
* <pre>
* &lt;style name=&quot;AppTheme.Fab&quot; parent=&quot;FloatingActionButton&quot;&gt;
* &lt;item name=&quot;floatingActionButtonColor&quot;&gt;@color/my_fab_color&lt;/item&gt;
* &lt;/style&gt;
* </pre>
* Link this style in your theme:
* <pre>
* &lt;style name=&quot;AppTheme&quot; parent=&quot;android:Theme&quot;&gt;
* &lt;item name=&quot;floatingActionButtonStyle&quot;&gt;@style/AppTheme.Fab&lt;/item&gt;
* &lt;/style&gt;
* </pre>
* <p/>
* Customizing in layout.xml:
* <pre>
* &lt;com.shamanland.fab.FloatingActionButton
* android:layout_width=&quot;wrap_content&quot;
* android:layout_height=&quot;wrap_content&quot;
* android:src=&quot;@drawable/ic_action_my&quot;
* app:floatingActionButtonColor=&quot;@color/my_fab_color&quot;
* app:floatingActionButtonSize=&quot;mini&quot;
* /&gt;
* </pre>
* <p/>
* Customizing in java-code:
* <pre>
* FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
* fab.setSize(FloatingActionButton.SIZE_MINI);
* fab.setColor(Color.RED);
* // NOTE invoke this method after setting new values!
* fab.initBackground();
* // NOTE standard method of ImageView
* fab.setImageResource(R.drawable.ic_action_my);
* </pre>
*/
public class FloatingActionButton extends ImageButton {
/**
* Constant representing normal size {@code 56dp}. Value: 0x0
*/
public static final int SIZE_NORMAL = 0;
/**
* Constant representing mini size {@code 40dp}. Value: 0x1
*/
public static final int SIZE_MINI = 1;
private int mSize;
private int mColor;
private ColorStateList mColorStateList;
private GradientDrawable mCircleDrawable;
/**
* Gets abstract size of this button.
*
* @return {@link #SIZE_NORMAL} or {@link #SIZE_MINI}
*/
public int getSize() {
return mSize;
}
/**
* Sets abstract size for this button.
* <p/>
* Xml attribute: {@code app:floatingActionButtonSize}
*
* @param size {@link #SIZE_NORMAL} or {@link #SIZE_MINI}
*/
public void setSize(int size) {
mSize = size;
}
/**
* Gets background color of this button.
*
* @return color
*/
public int getColor() {
return mColor;
}
/**
* Sets background color for this button.
* <p/>
* Xml attribute: {@code app:floatingActionButtonColor}
*
* @param color color
*/
public void setColor(int color) {
mColor = color;
}
/**
* Gets color state list used as background for this button.
*
* @return may be null
*/
public ColorStateList getColorStateList() {
return mColorStateList;
}
/**
* Sets color state list as background for this button.
* <p/>
* Xml attribute: {@code app:floatingActionButtonColor}
*
* @param colorStateList color
*/
public void setColorStateList(ColorStateList colorStateList) {
mColorStateList = colorStateList;
}
public FloatingActionButton(Context context) {
super(context);
init(context, null, 0);
}
public FloatingActionButton(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs, com.shamanland.fab.R.attr.floatingActionButtonStyle);
}
public FloatingActionButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(context, attrs, defStyle);
}
private void init(Context context, AttributeSet attrs, int defStyle) {
TypedArray a;
try {
if (isInEditMode()) {
return;
}
if (attrs == null) {
return;
}
Resources.Theme theme = context.getTheme();
if (theme == null) {
return;
}
a = theme.obtainStyledAttributes(attrs, com.shamanland.fab.R.styleable.FloatingActionButton, defStyle, com.shamanland.fab.R.style.FloatingActionButton_Dark);
if (a == null) {
return;
}
} finally {
mSize = SIZE_NORMAL;
mColor = Color.GRAY;
mColorStateList = null;
}
try {
initAttrs(a);
} finally {
a.recycle();
}
initBackground();
}
private void initAttrs(TypedArray a) {
setSize(a.getInteger(com.shamanland.fab.R.styleable.FloatingActionButton_floatingActionButtonSize, SIZE_NORMAL));
setColor(a.getColor(com.shamanland.fab.R.styleable.FloatingActionButton_floatingActionButtonColor, Color.GRAY));
setColorStateList(a.getColorStateList(com.shamanland.fab.R.styleable.FloatingActionButton_floatingActionButtonColor));
}
/**
* Inflate and initialize background drawable for this view with arguments
* inflated from xml or specified using {@link #setSize(int)} or {@link #setColor(int)}
* <p/>
* Invoked from constructor, but it's allowed to invoke this method manually from code.
*/
public void initBackground() {
final int backgroundId;
if (mSize == SIZE_MINI) {
backgroundId = com.shamanland.fab.R.drawable.com_shamanland_fab_circle_mini;
} else {
backgroundId = com.shamanland.fab.R.drawable.com_shamanland_fab_circle_normal;
}
Drawable background = getResources().getDrawable(backgroundId);
if (background instanceof LayerDrawable) {
LayerDrawable layers = (LayerDrawable) background;
if (layers.getNumberOfLayers() == 2) {
Drawable shadow = layers.getDrawable(0);
Drawable circle = layers.getDrawable(1);
if (shadow instanceof GradientDrawable) {
((GradientDrawable) shadow.mutate()).setGradientRadius(getShadowRadius(shadow, circle));
}
if (circle instanceof GradientDrawable) {
mCircleDrawable = (GradientDrawable) circle.mutate();
mCircleDrawable.setColor(mColor);
}
}
}
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
//noinspection deprecation
setBackgroundDrawable(background);
} else {
setBackground(background);
}
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
if (mCircleDrawable != null && mColorStateList != null) {
mCircleDrawable.setColor(mColorStateList.getColorForState(getDrawableState(), mColor));
// NOTE maybe this line is required only for Gingerbread
invalidate();
}
}
/**
* Calculates required radius of shadow.
*
* @param shadow underlay drawable
* @param circle overlay drawable
* @return calculated radius, always >= 1
*/
protected static int getShadowRadius(Drawable shadow, Drawable circle) {
int radius = 0;
if (shadow != null && circle != null) {
Rect rect = new Rect();
radius = (circle.getIntrinsicWidth() + (shadow.getPadding(rect) ? rect.left + rect.right : 0)) / 2;
}
return Math.max(1, radius);
}
}

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@ -1,6 +1,6 @@
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent" android:layout_width="match_parent"
android:layout_height="match_parent"> android:layout_height="match_parent">
@ -37,4 +37,17 @@
android:textSize="16sp" android:textSize="16sp"
android:layout_centerInParent="true"/> android:layout_centerInParent="true"/>
<com.sismics.docs.ui.view.FloatingActionButton
android:id="@+id/addDocumentButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="16dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="20dp"
android:src="@drawable/ic_add_white_24dp"
app:floatingActionButtonColor="#263238"/>
</RelativeLayout> </RelativeLayout>