Android self-defined textview for text spacing

Reprint please indicate source: http://blog.csdn.net/u011974987/article/details/50845269;

In Android, TextView is more compact when it is displayed in Chinese by default. Not very beautiful. In order to maintain a certain line spacing for each line, you can set the property Android:linespacingextra or Android:linespacingmultiplier.
But sometimes we need to have space between the TextView text, two words, we can in the XML file. It is accomplished by knocking the blanks. Suppose there is a lot of text or a variable text.

Do we still use the way to knock the space to achieve it? Oh no~!

How do you achieve line spacing and text spacing? (please look down ↓).

1, set the line spacing of TextView

To add a property to the TextView control:

  android:lineSpacingExtra="13dp"   //设置行间距  android:lineSpacingMultiplier="1.2"  //设置行间距的倍数。
如”1.2”

2, set the text spacing of TextView

• First look at the following:
  
• The TextView code of your own definition is as follows:

 PackageCom.woyou.spacingtextview;ImportAndroid.content.Context;Importandroid.text.Spannable;Importandroid.text.SpannableString;ImportAndroid.text.style.ScaleXSpan;ImportAndroid.util.AttributeSet;ImportAndroid.widget.TextView;/** * Created by Xiho on 2016/3/7. * * Public  class spacingtextview extends TextView{    Private floatletterspacing = Letterspacing.biggest;PrivateCharsequence Originaltext =""; Public Spacingtextview(Context context) {Super(context); } Public Spacingtextview(context context, AttributeSet attrs) {Super(context, attrs); Originaltext =Super. GetText (); Applyletterspacing (); This. Invalidate (); } Public Spacingtextview(context context, AttributeSet attrs,intDefstyle) {Super(Context, attrs, Defstyle); } Public float getletterspacing() {returnletterspacing; } Public void setletterspacing(floatletterspacing) { This. letterspacing = letterspacing;    Applyletterspacing (); }@Override     Public void SetText(charsequence text, Buffertype type)        {originaltext = text;    Applyletterspacing (); }@Override     PublicCharsequenceGetText() {returnOriginaltext; }/** * kerning for whatever string (technically, a simple method for charsequence not used) is TextView */    Private void applyletterspacing() {if( This==NULL|| This. Originaltext = =NULL)return; StringBuilder Builder =NewStringBuilder (); for(inti =0; I < originaltext.length (); i++) {String c =""+ Originaltext.charat (i); Builder.append (C.tolowercase ());if(i+1< Originaltext.length ()) {Builder.append ("\U00A0"); }} spannablestring Finaltext =NewSpannablestring (Builder.tostring ());if(Builder.tostring (). Length () >1) { for(inti =1; I < builder.tostring (). Length (); i+=2) {Finaltext.setspan (NewScalexspan ((letterspacing+1)/Ten), I, i+1, spannable.span_exclusive_exclusive); }        }Super. SetText (Finaltext, buffertype.spannable); } Public  class letterspacing {         Public Final Static floatNORMAL =0; Public Final Static floatNormalbig = (float)0.025; Public Final Static floatBIG = (float)0.05; Public Final Static floatBiggest = (float)0.2; }}

• Use in activity:

Private Spacingtextview Mspacingtextview;@Override protected void OnCreate (Bundle savedinstancestate) {Super. OnCreate(savedinstancestate);Setcontentview (R. Layout. Activity_main);Mspacingtextview = (Spacingtextview) Findviewbyid (R. ID. Space_text);Mspacingtextview. SetText(Getresources (). getString(R. String. Test));//Orany float. To reset to normal, use0 orLetterspacingtextview. Spacing. NORMALMspacingtextview. setletterspacing(Ten);}

• XML files such as the following:

<?xml version= "1.0" encoding= "Utf-8"?><Relativelayout xmlns:android="Http://schemas.android.com/apk/res/android"    Xmlns:app="Http://schemas.android.com/apk/res-auto"    Xmlns:tools="Http://schemas.android.com/tools"    Android:layout_width="Match_parent"    Android:layout_height="Match_parent"    Android:paddingbottom="@dimen/activity_vertical_margin"    Android:paddingleft="@dimen/activity_horizontal_margin"    Android:paddingright="@dimen/activity_horizontal_margin"    Android:paddingtop="@dimen/activity_vertical_margin"    App:layout_behavior="@string/appbar_scrolling_view_behavior"    Tools:context="Com.woyou.spacingtextview.MainActivity"    Tools:showin="@layout/activity_main">    <com.woyou.spacingtextview.SpacingTextViewandroid:id="@+id/space_text"  Android:layout_width="Wrap_content"android:linespacingextra="13DP"android: Layout_height="Wrap_content"android:text="@string/test" />                                        </relativelayout>

The above code is very convenient to use. Add to your project to see the effect.

TextView control to open Source: Spacingtextview
Suppose you want to achieve TextView text alignment; Open Source project: Aligntextview

Android self-defined textview for text spacing