Android Project Combat (V): TextView Adaptive size

Original: Android Project Combat (V): TextView Adaptive size

The default size of the font set for the TextView is important for the UI interface to look good, the small screen setting of the text is too large or large screen settings of the text too small to cause the UI is not beautiful

Now let's learn the adaptive size of the TextView control, that is, when the length of the text changes, the size of the text will change accordingly, guaranteed to display in one line

Implementation relies on third-party class libraries

Third-party class sources:

Https://github.com/grantland/android-autofittextview

As with normal use of TextView, only the TextView label that will be adaptive is set to <me.grantland.widget.AutofitTextView/>

Note: Be sure to set as a single line, negation cannot show effect

Android:singleline="true"

1<Me.grantland.widget.AutofitTextView2Android:id="@+id/output_autofit"3Android:layout_width="match_parent"4android:layout_height="wrap_content"5android:text="@string/example"6Android:textsize="50SP"7android:gravity="Center"8Android:singleline="true"9Autofit:mintextsize="8SP"Ten/>

Layout file:

1<?xml version="1.0"encoding="Utf-8"?>2<scrollview xmlns:android="http://schemas.android.com/apk/res/android"3xmlns:autofit="Http://schemas.android.com/apk/res-auto"4Android:layout_width="match_parent"5android:layout_height="match_parent">6<LinearLayout7Android:layout_width="match_parent"8android:layout_height="wrap_content"9android:orientation="Vertical"Ten> One<EditText AAndroid:id="@+id/input" -Android:layout_width="match_parent" -android:layout_height="wrap_content" theAndroid:singleline="true" -Android:hint="@string/input_hint" -android:text="@string/example"/> -<TextView +Android:layout_width="match_parent" -android:layout_height="wrap_content" +android:text="@string/label_normal" A/> at<TextView -Android:id="@+id/output" -Android:layout_width="match_parent" -android:layout_height="wrap_content" -android:text="@string/example" -Android:textsize="50SP" inandroid:gravity="Center" -/> to<TextView +Android:layout_width="match_parent" -android:layout_height="wrap_content" theandroid:text="@string/label_autofit" */> $<Me.grantland.widget.AutofitTextViewPanax NotoginsengAndroid:id="@+id/output_autofit" -Android:layout_width="match_parent" theandroid:layout_height="wrap_content" +android:text="@string/example" AAndroid:textsize="50SP" theandroid:gravity="Center" +Android:singleline="true" -Autofit:mintextsize="8SP" $/> $</LinearLayout> -</ScrollView>

Activity_main.xml

String.xml

1<?xml version="1.0"encoding="Utf-8"?>2<resources>3 4<stringName="app_name">texttest</string>5<stringName="action_settings">settings</string>6<stringName="Hello_world">hello world!</string>7 8<stringName="Input_hint">text</string>9<stringName="Label_normal">normal:</string>Ten<stringName="Label_autofit">autofit:</string> One  A<stringName="Example">this isAn example</string> -  -</resources>

View Code

Activity

1 Package com.example.texttest;2 3 import android.app.Activity;4 import Android.os.Bundle;5 import android.text.Editable;6 import Android.text.TextWatcher;7 import Android.view.Menu;8 import Android.widget.EditText;9 import Android.widget.TextView;Ten  One  Public classMainactivity extends Activity { A  -     PrivateTextView moutput; -     PrivateTextView mautofitoutput; the @Override -     protected voidonCreate (Bundle savedinstancestate) { - super.oncreate (savedinstancestate); - Setcontentview (r.layout.activity_main); +Moutput =(TextView) Findviewbyid (r.id.output); -Mautofitoutput =(TextView) Findviewbyid (r.id.output_autofit); +  A((EditText) Findviewbyid (R.id.input)). Addtextchangedlistener (NewTextwatcher () { at @Override -              Public voidBeforetextchanged (Charsequence charsequence,intIintI2,inti3) { -                 // do nothing -             } -  - @Override in              Public voidOnTextChanged (Charsequence charsequence,intIintI2,inti3) { - Moutput.settext (charsequence); to Mautofitoutput.settext (charsequence); +             } -  the @Override *              Public voidaftertextchanged (Editable Editable) { $                 // do nothingPanax Notoginseng             } -         }); the     } +      A  the  + @Override -      Publicboolean Oncreateoptionsmenu (Menu menu) { $         //inflate the menu; This adds items to the action bar if it is present. $ getmenuinflater (). Inflate (R.menu.main, menu); -         return true; -     } the      -}

Mainactivity.java

Effect:

Android Project Combat (V): TextView Adaptive size