I'm using Rich edit text library to create HTML in edit-text on android. Here is the GitHub link to the project.
According to the demo, I register the RTApi and RTManager on Activity start but it add a few seconds delay with a black empty screen on start. Code to register that is
RTApi rtApi = new RTApi(this, new RTProxyImpl(this), new RTMediaFactoryImpl(this, true));
RTManager rtManager = new RTManager(rtApi, savedInstanceState);
And here is the logcat on activity start
E/AssetIndex: assets.index
E/AssetIndex: java.io.FileNotFoundException: assets.index
E/AssetIndex: at android.content.res.AssetManager.openAsset(Native Method)
E/AssetIndex: at android.content.res.AssetManager.open(AssetManager.java:334)
E/AssetIndex: at android.content.res.AssetManager.open(AssetManager.java:308)
E/AssetIndex: at com.onegravity.rteditor.fonts.AssetIndex.getAssetIndex(AssetIndex.java:46)
E/AssetIndex: at com.onegravity.rteditor.fonts.FontManager.getAssetFonts(FontManager.java:156)
E/AssetIndex: at com.onegravity.rteditor.fonts.FontManager.getFonts(FontManager.java:97)
E/AssetIndex: at com.onegravity.rteditor.toolbar.HorizontalRTToolbar.getFontItems(HorizontalRTToolbar.java:213)
E/AssetIndex: at com.onegravity.rteditor.toolbar.HorizontalRTToolbar.onFinishInflate(HorizontalRTToolbar.java:177)
E/AssetIndex: at android.view.LayoutInflater.rInflate(LayoutInflater.java:814)
E/AssetIndex: at android.view.LayoutInflater.rInflate(LayoutInflater.java:809)
E/AssetIndex: at android.view.LayoutInflater.parseInclude(LayoutInflater.java:916)
E/AssetIndex: at android.view.LayoutInflater.rInflate(LayoutInflater.java:802)
E/AssetIndex: at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
E/AssetIndex: at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
E/AssetIndex: at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
E/AssetIndex: at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257)
E/AssetIndex: at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
E/AssetIndex: at com.workmatec.apps.androidapp.UIElements.AppFormActivity.onCreate(AppFormActivity.java:91)
E/AssetIndex: at android.app.Activity.performCreate(Activity.java:6020)
E/AssetIndex: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
E/AssetIndex: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2259)
E/AssetIndex: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2368)
E/AssetIndex: at android.app.ActivityThread.access$800(ActivityThread.java:149)
E/AssetIndex: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1284)
E/AssetIndex: at android.os.Handler.dispatchMessage(Handler.java:102)
E/AssetIndex: at android.os.Looper.loop(Looper.java:135)
E/AssetIndex: at android.app.ActivityThread.main(ActivityThread.java:5299)
E/AssetIndex: at java.lang.reflect.Method.invoke(Native Method)
E/AssetIndex: at java.lang.reflect.Method.invoke(Method.java:372)
E/AssetIndex: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:908)
E/AssetIndex: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:703)
E/Minikin: addFont failed to create font /system/fonts/jb
Here is my Layout File
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.workmatec.apps.androidapp.UIElements.AppFormActivity">
<include
android:id="@+id/rte_toolbar_container"
layout="@layout/rte_toolbar" />
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@id/rte_toolbar_container">
<LinearLayout
android:id="@+id/appForm"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/app_background"
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">
</LinearLayout>
</ScrollView>
XML of RTE_toolbar.xml
<?xml version="1.0" encoding="utf-8"?>
<HorizontalScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="?attr/actionBarItemBackground"
android:scrollbarStyle="outsideOverlay" >
<com.onegravity.rteditor.toolbar.HorizontalRTToolbar
android:id="@+id/rte_toolbar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="?attr/actionBarItemBackground"
android:orientation="horizontal" >
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_bold"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarBold" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_italic"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarItalic" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_underline"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarUnderline" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_strikethrough"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarStrikethrough" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_superscript"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarSuperscript" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_subscript"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarSubscript" />
<include layout="@layout/rte_toolbar_divider"/>
<Spinner
android:id="@+id/toolbar_font"
style="?attr/rte_ToolbarSpinner"
android:background="?attr/rte_icToolbarFont" />
<Spinner
android:id="@+id/toolbar_fontsize"
style="?attr/rte_ToolbarSpinner"
android:background="?attr/rte_icToolbarFontSize" />
<Spinner
android:id="@+id/toolbar_fontcolor"
style="?attr/rte_ToolbarSpinner"
android:background="?attr/rte_icToolbarFontColor" />
<Spinner
android:id="@+id/toolbar_bgcolor"
style="?attr/rte_ToolbarSpinner"
android:background="?attr/rte_icToolbarBGColor" />
<include layout="@layout/rte_toolbar_divider"/>
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_number"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarNumber" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_bullet"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarBullet" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_inc_indent"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarIncIndent" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_dec_indent"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarDecIntent" />
<include layout="@layout/rte_toolbar_divider"/>
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_align_left"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarAlignLeft" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_align_center"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarAlignCenter" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_align_right"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarAlignRight" />
<include layout="@layout/rte_toolbar_divider"/>
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_link"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarLink" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_image"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarImage" />
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_image_capture"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarCapture" />
<!-- com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_audio"
style="@style/ToolbarButton"
android:background="?attr/rte_icToolbarAudio" /-->
<!-- com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_video"
style="@style/ToolbarButton"
android:layout_marginRight="4dip"
android:background="?attr/rte_icToolbarVideo" /-->
<include layout="@layout/rte_toolbar_divider"/>
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_undo"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarUndo"/>
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_redo"
style="@style/RTE_ToolbarButton"
android:background="?attr/rte_icToolbarRedo"/>
<com.onegravity.rteditor.toolbar.RTToolbarImageButton
android:id="@+id/toolbar_clear"
style="@style/RTE_ToolbarButton"
android:layout_marginRight="4dip"
android:background="?attr/rte_icToolbarClear"/>
</com.onegravity.rteditor.toolbar.HorizontalRTToolbar>
</HorizontalScrollView>
RTE Toolbar Button style
<style name="RTE_ToolbarButton" parent="@android:style/Widget.ImageButton">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:layout_gravity">center</item>
<item name="android:layout_marginTop">4dip</item>
<item name="android:layout_marginBottom">4dip</item>
<item name="android:layout_marginLeft">4dip</item>
<item name="android:gravity">center</item>
<item name="android:adjustViewBounds">true</item>
</style>
I had the same problem. I just added assets.index file to the assets folder of my project. The file has followings:
<?xml version="1.0"?>
<project default="createAssetIndex">
<target name="createAssetIndex">
<fileset id="assets.fileset" dir="assets/" includes="**"
excludes="asset.index" />
<pathconvert pathsep="${line.separator}" property="assets"
refid="assets.fileset">
<mapper>
<globmapper from="${basedir}/assets/*" to="*"
handledirsep="yes" />
</mapper>
</pathconvert>
<echo file="assets/assets.index">${assets}</echo>
</target>
</project>For more details please follow this link: determine wheteher android asset entry is a file or directory