Design and implementation code _android of Android custom soft keyboard

Accidentally found the Android.inputmethodservice.Keyboard class, that is, Android can customize the keyboard class, made a simple example for everyone to refer to.

The effect is as follows:

First look at the interface layout file

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:orientation="vertical" > 
   
  <EditText
    android:id="@+id/edit"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" /> 
   
  <EditText
    android:id="@+id/edit1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:password="true" /> 
   
  <RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" > 
   
    <android.inputmethodservice.KeyboardView
      android:id="@+id/keyboard_view"
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:layout_alignParentBottom="true"
      android:focusable="true"
      android:focusableInTouchMode="true"
      android:background="@color/lightblack"
      android:keyBackground="@drawable/btn_keyboard_key"
      android:keyTextColor="@color/white"
      android:visibility="gone" /> 
  </RelativeLayout> 
   
</LinearLayout> 

You can see from the layout file that there are two input boxes on the interface, one of which is a password input box and a hidden keyboard control on the interface.

Create a new XML folder under RES and create a new qwerty.xml and Symbols.xml file in the XML folder. Qwerty.xml is the letter keyboard layout, Symbols.xml is the numeric keypad layout, as follows:

Qwerty.xml Content

<?xml version="1.0" encoding="UTF-8"?> 
<Keyboard android:keyWidth="10.000002%p" android:keyHeight="@dimen/key_height"
    android:horizontalGap="0.0px" android:verticalGap="0.0px"
    xmlns:android="http://schemas.android.com/apk/res/android"> 
    <Row> 
        <Key android:codes="113" android:keyEdgeFlags="left"
            android:keyLabel="q" /> 
        <Key android:codes="119" android:keyLabel="w" /> 
        <Key android:codes="101" android:keyLabel="e" /> 
        <Key android:codes="114" android:keyLabel="r" /> 
        <Key android:codes="116" android:keyLabel="t" /> 
        <Key android:codes="121" android:keyLabel="y" /> 
        <Key android:codes="117" android:keyLabel="u" /> 
        <Key android:codes="105" android:keyLabel="i" /> 
        <Key android:codes="111" android:keyLabel="o" /> 
        <Key android:codes="112" android:keyEdgeFlags="right"
            android:keyLabel="p" /> 
    </Row> 
    <Row> 
        <Key android:horizontalGap="4.999995%p" android:codes="97"
            android:keyEdgeFlags="left" android:keyLabel="a" /> 
        <Key android:codes="115" android:keyLabel="s" /> 
        <Key android:codes="100" android:keyLabel="d" /> 
        <Key android:codes="102" android:keyLabel="f" /> 
        <Key android:codes="103" android:keyLabel="g" /> 
        <Key android:codes="104" android:keyLabel="h" /> 
        <Key android:codes="106" android:keyLabel="j" /> 
        <Key android:codes="107" android:keyLabel="k" /> 
        <Key android:codes="108" android:keyEdgeFlags="right"
            android:keyLabel="l" /> 
    </Row> 
    <Row> 
        <Key android:keyWidth="14.999998%p" android:codes="-1"
            android:keyEdgeFlags="left" android:isModifier="true"
            android:isSticky="true" android:keyIcon="@drawable/sym_keyboard_shift" /> 
        <Key android:codes="122" android:keyLabel="z" /> 
        <Key android:codes="120" android:keyLabel="x" /> 
        <Key android:codes="99" android:keyLabel="c" /> 
        <Key android:codes="118" android:keyLabel="v" /> 
        <Key android:codes="98" android:keyLabel="b" /> 
        <Key android:codes="110" android:keyLabel="n" /> 
        <Key android:codes="109" android:keyLabel="m" /> 
        <Key android:keyWidth="14.999998%p" android:codes="-5"
            android:keyEdgeFlags="right" android:isRepeatable="true"
            android:keyIcon="@drawable/sym_keyboard_delete" /> 
    </Row> 
    <Row android:rowEdgeFlags="bottom"> 
        <Key android:keyWidth="20.000004%p" android:codes="-2"
            android:keyLabel="12#" /> 
        <Key android:keyWidth="14.999998%p" android:codes="44"
            android:keyLabel="," /> 
        <Key android:keyWidth="29.999996%p" android:codes="32"
            android:isRepeatable="true" android:keyIcon="@drawable/sym_keyboard_space" /> 
        <Key android:keyWidth="14.999998%p" android:codes="46"
            android:keyLabel="." /> 
        <Key android:keyWidth="20.000004%p" android:codes="-3"
            android:keyEdgeFlags="right" android:keyLabel="完成" /> 
    </Row> 
</Keyboard> 

Symbols.xml Content

<?xml version="1.0" encoding="utf-8"?> 
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
    android:keyWidth="25%p" android:horizontalGap="0px"
    android:verticalGap="0px" android:keyHeight="@dimen/key_height"> 
    <Row> 
        <Key android:codes="49" android:keyLabel="1" /> 
        <Key android:codes="50" android:keyLabel="2" /> 
        <Key android:codes="51" android:keyLabel="3" /> 
        <Key android:codes="57419" android:keyEdgeFlags="right"
            android:keyIcon="@drawable/sym_keyboard_left" /> 
    </Row> 
    <Row> 
        <Key android:codes="52" android:keyLabel="4" /> 
        <Key android:codes="53" android:keyLabel="5" /> 
        <Key android:codes="54" android:keyLabel="6" /> 
        <Key android:codes="57421" android:keyEdgeFlags="right"
            android:keyIcon="@drawable/sym_keyboard_right" /> 
    </Row> 
    <Row> 
        <Key android:codes="55" android:keyLabel="7" /> 
        <Key android:codes="56" android:keyLabel="8" /> 
        <Key android:codes="57" android:keyLabel="9" /> 
        <Key android:codes="-3" android:keyHeight="100dip"
            android:keyEdgeFlags="right" android:isRepeatable="true"
            android:keyLabel="完成" /> 
    </Row> 
    <Row> 
        <Key android:codes="-2" android:keyLabel="ABC" /> 
        <Key android:codes="48" android:keyLabel="0" /> 
        <Key android:codes="-5" android:keyIcon="@drawable/sym_keyboard_delete" /> 
    </Row> 
</Keyboard> 

Keydemoactivity.java

package cn.key; 
   
import android.app.Activity; 
import android.content.Context; 
import android.os.Bundle; 
import android.text.InputType; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnTouchListener; 
import android.widget.EditText; 
   
public class KeydemoActivity extends Activity { 
    private Context ctx; 
    private Activity act; 
    private EditText edit; 
    private EditText edit1; 
   
    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
        ctx = this; 
        act = this; 
   
        edit = (EditText) this.findViewById(R.id.edit); 
        edit.setInputType(InputType.TYPE_NULL); 
   
        edit1 = (EditText) this.findViewById(R.id.edit1); 
   
        edit.setOnTouchListener(new OnTouchListener() { 
            @Override
            public boolean onTouch(View v, MotionEvent event) { 
                new KeyboardUtil(act, ctx, edit).showKeyboard(); 
                return false; 
            } 
        }); 
   
        edit1.setOnTouchListener(new OnTouchListener() { 
            @Override
            public boolean onTouch(View v, MotionEvent event) { 
                int inputback = edit1.getInputType(); 
                edit1.setInputType(InputType.TYPE_NULL); 
                new KeyboardUtil(act, ctx, edit1).showKeyboard(); 
                edit1.setInputType(inputback); 
                return false; 
            } 
        }); 
   
    } 
} 

Keyboardutil.java

Package Cn.key; 
  
Import java.util.List; 
Import android.app.Activity; 
Import Android.content.Context; 
Import Android.inputmethodservice.Keyboard; 
Import Android.inputmethodservice.KeyboardView; 
Import Android.inputmethodservice.Keyboard.Key; 
Import Android.inputmethodservice.KeyboardView.OnKeyboardActionListener; 
Import android.text.Editable; 
Import Android.view.View; 
  
Import Android.widget.EditText; 
    public class Keyboardutil {private Context ctx; 
    Private Activity Act; 
    Private Keyboardview Keyboardview; Private keyboard k1;//Letter Keyboard private keyboard k2;//numeric keypad public Boolean Isnun = false;//whether the data keyboard is public Boole 
  
    An isupper = false;//is capitalized private edittext ed; 
        Public Keyboardutil (the Activity Act, the context ctx, EditText edit) {this.act = act; 
        This.ctx = CTX; 
        This.ed = edit; 
        K1 = new keyboard (CTX, r.xml.qwerty); 
        K2 = new Keyboard (CTX, r.xml.symbols); Keyboardview = (KeyboarDview) Act.findviewbyid (R.id.keyboard_view); 
        Keyboardview.setkeyboard (K1); 
        Keyboardview.setenabled (TRUE); 
        Keyboardview.setpreviewenabled (TRUE); 
    Keyboardview.setonkeyboardactionlistener (listener); Private Onkeyboardactionlistener listener = new Onkeyboardactionlistener () {@Override public 
        void Swipeup () {} @Override public void Swiperight () {} @Override 
  
        public void Swipeleft () {} @Override public void Swipedown () {} @Override public void Ontext (charsequence text) {} @Override public void Onreleas 
  
        E (int primarycode) {} @Override public void onpress (int primarycode) {} 
            @Override public void OnKey (int primarycode, int[] keycodes) {Editable Editable = Ed.gettext (); int start = Ed.getSelectionStart (); 
            if (Primarycode = = Keyboard.keycode_cancel) {//complete hidekeyboard (); else if (Primarycode = = Keyboard.keycode_delete) {//fallback if (editable!= null && editable.length 
                    () > 0) {if (Start > 0) {editable.delete (start-1, start); 
                }} else if (Primarycode = keyboard.keycode_shift) {//Case switching 
                ChangeKey (); 
  
            Keyboardview.setkeyboard (K1); else if (Primarycode = = Keyboard.keycode_mode_change) {//numeric keypad switch if (Isnun) {Isnu 
                    n = false; 
                Keyboardview.setkeyboard (K1); 
                    else {Isnun = true; 
                Keyboardview.setkeyboard (K2); 
                ' Else if ' (Primarycode = = 57419) {//Go left if (Start > 0) {    Ed.setselection (start-1); 
                    ' Else if ' (Primarycode = = 57421) {//Go right if (Start < Ed.length ()) { 
                Ed.setselection (start + 1); 
            } else {Editable.insert (Start, character.tostring ((char) primarycode)); 
      
    } 
        } 
    }; 
        /** * Keyboard case switching/private void ChangeKey () {list<key> keylist = K1.getkeys (); 
            if (isupper) {//uppercase toggle Lowercase isupper = false; 
                    for (Key key:keylist) {if (Key.label!=null && Isword (key.label.toString ())) { 
                    Key.label = Key.label.toString (). toLowerCase (); 
                Key.codes[0] = key.codes[0]+32; 
            }} else {//lowercase toggle Uppercase Isupper = true; 
           for (Key key:keylist) {if (Key.label!=null && Isword (key.label.toString ())) {         Key.label = Key.label.toString (). toUpperCase (); 
                Key.codes[0] = key.codes[0]-32; 
    }}} public void Showkeyboard () {int visibility = keyboardview.getvisibility (); 
    if (visibility = = View.gone | | visibility = = view.invisible) {keyboardview.setvisibility (view.visible); 
    } public void Hidekeyboard () {int visibility = keyboardview.getvisibility (); 
    if (visibility = = view.visible) {keyboardview.setvisibility (view.invisible); 
      } Private Boolean Isword (String str) {string wordstr = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; 
        if (Wordstr.indexof (Str.tolowercase ()) >-1) {return true; 
  return false; 

 } 
  
}

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.