dependencies {
  compile 'com.joanzapata.iconify:android-iconify-fontawesome:2.2.2' // (v4.5)
  compile 'com.joanzapata.iconify:android-iconify-entypo:2.2.2' // (v3,2015)
  compile 'com.joanzapata.iconify:android-iconify-typicons:2.2.2' // (v2.0.7)
  compile 'com.joanzapata.iconify:android-iconify-material:2.2.2' // (v2.0.0)
  compile 'com.joanzapata.iconify:android-iconify-material-community:2.2.2' // (v1.4.57)
  compile 'com.joanzapata.iconify:android-iconify-meteocons:2.2.2' // (latest)
  compile 'com.joanzapata.iconify:android-iconify-weathericons:2.2.2' // (v2.0)
  compile 'com.joanzapata.iconify:android-iconify-simplelineicons:2.2.2' // (v1.0.0)
  compile 'com.joanzapata.iconify:android-iconify-ionicons:2.2.2' // (v2.0.1)
}

public class MyApplication extends Application {
  @Override
  public void onCreate() {
    super.onCreate();
    Iconify
      .with(new FontAwesomeModule())
      .with(new EntypoModule())
      .with(new TypiconsModule())
      .with(new MaterialModule())
      .with(new MaterialCommunityModule())
      .with(new MeteoconsModule())
      .with(new WeathericonsModule())
      .with(new SimpleLineIconsModule())
      .with(new IoniconsModule());
  }
}

<application
  android:name="com.application.MyApplication"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name">

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="wrap_content">
  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="100dp"
    android:layout_marginTop="30dp"
    android:gravity="center"
    android:orientation="vertical">
    <TextView
      android:id="@+id/id_tv"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="example delegate"
      tools:ignore="HardcodedText" />
    <com.joanzapata.iconify.widget.IconTextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:shadowColor="#22000000"
      android:shadowDx="0"
      android:shadowDy="5"
      android:shadowRadius="1"
      android:text="Welcome {fa-smile-o} {fa-hand-peace-o} !"
      android:textColor="#2A9BDA"
      android:textSize="30sp" />
    <com.joanzapata.iconify.widget.IconTextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:shadowColor="#22000000"
      android:shadowDx="3"
      android:shadowDy="3"
      android:shadowRadius="1"
      android:text="I {fa-heart-o} to {fa-code} on {fa-android}"
      android:textColor="#FF0000"
      android:textSize="40sp" />
    <com.joanzapata.iconify.widget.IconButton
      android:id="@+id/id_icon_ib"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:background="@null"
      android:clickable="true"
      android:shadowColor="#22000000"
      android:shadowDx="3"
      android:shadowDy="3"
      android:shadowRadius="1"
      android:text="I {fa-heart-o}"
      android:textColor="@color/selector_text_press_color"
      android:textSize="40sp" />
    <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginTop="20dp"
      android:gravity="center"
      android:orientation="horizontal">
      <ImageButton
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:background="@drawable/alipay_button_style" />
      <ImageButton
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_marginLeft="30dp"
        android:background="@drawable/wx_button_style" />
    </LinearLayout>
    <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginTop="20dp"
      android:gravity="center"
      android:orientation="horizontal">
      <com.joanzapata.iconify.widget.IconTextView
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:clickable="true"
        android:shadowColor="#22000000"
        android:text="{fa-weixin}"
        android:textColor="@color/selector_text_press_color"
        android:textSize="40sp" />
      <com.joanzapata.iconify.widget.IconTextView
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_marginLeft="30dp"
        android:clickable="true"
        android:text="{fa-cc-visa}"
        android:textColor="@color/selector_text_press_color"
        android:textSize="40sp" />
    </LinearLayout>
    <com.joanzapata.iconify.widget.IconTextView
      android:id="@+id/id_itv_wxicon"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginTop="10dp"
      android:text="{icon-scan}"
      android:textSize="40sp" />
    <com.joanzapata.iconify.widget.IconTextView
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_marginTop="10dp"
      android:text="{icon-wx-pay}"
      android:textSize="40sp" />
    <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginBottom="30dp"
      android:layout_marginTop="10dp"
      android:gravity="center"
      android:orientation="horizontal">
      <com.joanzapata.iconify.widget.IconTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="{fa-cog}"
        android:textSize="30dp" />
      <com.joanzapata.iconify.widget.IconTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:text="{fa-cog spin}"
        android:textSize="30dp" />
      <com.joanzapata.iconify.widget.IconTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:text="{fa-refresh spin}"
        android:textSize="30dp" />
      <com.joanzapata.iconify.widget.IconTextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:text="{fa-spinner spin}"
        android:textSize="30dp" />
      <ImageView
        android:id="@+id/id_iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp" />
    </LinearLayout>
  </LinearLayout>
</ScrollView>

public class IconFontModule implements IconFontDescriptor {
  @Override
  public String ttfFileName() {
    return "iconfont.ttf";//上文复制的字体文件
  }
  @Override
  public Icon[] characters() {
    return IconFonts.values();
  }
}
public enum IconFonts implements Icon {
  // 将/&#x替换成\u
  icon_scan('\ue609'),
  icon_ali_pay('\ue65e'),
  icon_wx_pay('\ue615'),
  icon_qq_pay('\ue60d');
  private char character;
  IconFonts(char character) {
    this.character = character;
  }
  @Override
  public String key() {
    return name().replace('_', '-');
  }
  @Override
  public char character() {
    return character;
  }
}

IconDrawable iconDrawable = new IconDrawable(this, FontAwesomeIcons.fa_key)
        .colorRes(R.color.colorAccent)
        .actionBarSize();
imageView.setImageDrawable(iconDrawable);

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_pressed="true" android:color="@color/colorAccent"/>
  <item android:color="@color/colorGreen"/>
</selector>

<?xml version="1.0" encoding="utf-8" ?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_pressed="true" android:drawable="@drawable/alipay_pressed" />
  <item android:drawable="@drawable/alipay_normal" />
</selector>

<?xml version="1.0" encoding="utf-8" ?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
  <item android:state_pressed="true"  android:drawable="@drawable/wx_pressed" />
  <item android:drawable="@drawable/wx_normal" />
</selector>

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <color name="colorPrimary">#3F51B5</color>
  <color name="colorPrimaryDark">#303F9F</color>
  <color name="colorAccent">#FF4081</color>
  <color name="colorGreen">#04b00f</color>
</resources>