怎么在Android應(yīng)用中自定義一個(gè)數(shù)字鍵盤(pán)與密碼輸入框

這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)怎么在Android應(yīng)用中自定義一個(gè)數(shù)字鍵盤(pán)與密碼輸入框，文章內(nèi)容豐富且以專(zhuān)業(yè)的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。

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控件實(shí)現(xiàn)清單：

1）集成于EditText的輸入框控件：PasswordInputView.java
2）數(shù)字鍵盤(pán)工具類(lèi)：NumKeyboardUtil.java
3）xml文件：number.xml
4）attrs樣式
5）layout文件

具體內(nèi)容：

PasswordInputView.java

public class PasswordInputView extends EditText{
 private int textLength;
 
 private int borderColor;
 private float borderWidth;
 private float borderRadius;
 
 private int passwordLength;
 private int passwordColor;
 private float passwordWidth;
 private float passwordRadius;
 
 private Paint passwordPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 private Paint borderPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 
 private final int defaultSplitLineWidth = 1;
 
 public PasswordInputView(Context context, AttributeSet attrs) {
  super(context, attrs);
  final Resources res = getResources();
 
  final int defaultBorderColor = res.getColor(R.color.line_color);
  final float defaultBorderWidth = res.getDimension(R.dimen.dimen_1px);
  final float defaultBorderRadius = res.getDimension(R.dimen.dimen_6);
 
  final int defaultPasswordLength = 6;
  final int defaultPasswordColor = res.getColor(R.color.normal_text_color);
  final float defaultPasswordWidth = res.getDimension(R.dimen.dimen_6);
  final float defaultPasswordRadius = res.getDimension(R.dimen.dimen_6);
 
  TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.PasswordInputView, 0, 0);
  try {
   borderColor = a.getColor(R.styleable.PasswordInputView_borderColor, defaultBorderColor);
   borderWidth = a.getDimension(R.styleable.PasswordInputView_borderWidth, defaultBorderWidth);
   borderRadius = a.getDimension(R.styleable.PasswordInputView_borderRadius, defaultBorderRadius);
   passwordLength = a.getInt(R.styleable.PasswordInputView_passwordLength, defaultPasswordLength);
   passwordColor = a.getColor(R.styleable.PasswordInputView_passwordColor, defaultPasswordColor);
   passwordWidth = a.getDimension(R.styleable.PasswordInputView_passwordWidth, defaultPasswordWidth);
   passwordRadius = a.getDimension(R.styleable.PasswordInputView_passwordRadius, defaultPasswordRadius);
  } finally {
   a.recycle();
  }
 
  borderPaint.setStrokeWidth(borderWidth);
  borderPaint.setColor(borderColor);
  passwordPaint.setStrokeWidth(passwordWidth);
  passwordPaint.setStyle(Paint.Style.FILL);
  passwordPaint.setColor(passwordColor);
 
  setSingleLine(true);
 }
 
 @Override
 protected void onDraw(Canvas canvas) {
  int width = getWidth();
  int height = getHeight();
 
  // 分割線(xiàn)
  borderPaint.setColor(borderColor);
  borderPaint.setStrokeWidth(defaultSplitLineWidth);
  for (int i = 1; i < passwordLength; i++) {
   float x = width * i / passwordLength;
   canvas.drawLine(x, 0, x, height, borderPaint);
  }
 
  // 密碼
  float cx, cy = height/ 2;
  float half = width / passwordLength / 2;
  for(int i = 0; i < textLength; i++) {
   cx = width * i / passwordLength + half;
   canvas.drawCircle(cx, cy, passwordWidth, passwordPaint);
  }
 }
 
 @Override
 protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
  super.onTextChanged(text, start, lengthBefore, lengthAfter);
  this.textLength = text.toString().length();
  invalidate();
 }
 
 public int getBorderColor() {
  return borderColor;
 }
 
 public void setBorderColor(int borderColor) {
  this.borderColor = borderColor;
  borderPaint.setColor(borderColor);
  invalidate();
 }
 
 public float getBorderWidth() {
  return borderWidth;
 }
 
 public void setBorderWidth(float borderWidth) {
  this.borderWidth = borderWidth;
  borderPaint.setStrokeWidth(borderWidth);
  invalidate();
 }
 
 public float getBorderRadius() {
  return borderRadius;
 }
 
 public void setBorderRadius(float borderRadius) {
  this.borderRadius = borderRadius;
  invalidate();
 }
 
 public int getPasswordLength() {
  return passwordLength;
 }
 
 public void setPasswordLength(int passwordLength) {
  this.passwordLength = passwordLength;
  invalidate();
 }
 
 public int getPasswordColor() {
  return passwordColor;
 }
 
 public void setPasswordColor(int passwordColor) {
  this.passwordColor = passwordColor;
  passwordPaint.setColor(passwordColor);
  invalidate();
 }
 
 public float getPasswordWidth() {
  return passwordWidth;
 }
 
 public void setPasswordWidth(float passwordWidth) {
  this.passwordWidth = passwordWidth;
  passwordPaint.setStrokeWidth(passwordWidth);
  invalidate();
 }
 
 public float getPasswordRadius() {
  return passwordRadius;
 }
 
 public void setPasswordRadius(float passwordRadius) {
  this.passwordRadius = passwordRadius;
  invalidate();
 }
}

NumKeyboardUtil 數(shù)字軟鍵盤(pán)工具類(lèi)

public class NumKeyboardUtil {
 private KeyboardView keyboardView; 
 private Keyboard k;// 數(shù)字鍵盤(pán) 
 private PasswordInputView ed;
 
 public NumKeyboardUtil(Activity act, Context ctx, PasswordInputView edit) { 
  this.ed = edit; 
  k = new Keyboard(ctx, R.xml.number); 
  keyboardView = (KeyboardView) act.findViewById(R.id.keyboard_view); 
  keyboardView.setKeyboard(k); 
  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 onRelease(int primaryCode) { 
  } 
 
  @Override 
  public void onPress(int primaryCode) { 
  } 
  //一些特殊操作按鍵的codes是固定的比如完成、回退等 
  @Override 
  public void onKey(int primaryCode, int[] keyCodes) { 
    Editable editable = ed.getText(); 
    int start = ed.getSelectionStart(); 
    if (primaryCode == Keyboard.KEYCODE_DELETE) {// 回退 
      if (editable != null && editable.length() > 0) { 
        if (start > 0) { 
          editable.delete(start - 1, start); 
        } 
      } 
    }else if (primaryCode == Keyboard.KEYCODE_CANCEL) {// 完成
     hideKeyboard();
    } else { //將要輸入的數(shù)字現(xiàn)在編輯框中 
      editable.insert(start, Character.toString((char) primaryCode)); 
    } 
  } 
 };
 
 public void showKeyboard() { 
  keyboardView.setVisibility(View.VISIBLE); 
 }
 
 public void hideKeyboard() {
  keyboardView.setVisibility(View.GONE);
 }
 
 public int getKeyboardVisible() {
  return keyboardView.getVisibility();
 }
}

number.xml
注意該文件需要放在項(xiàng)目下的res目錄下的xml目錄（沒(méi)有就建個(gè)）里面

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<Keyboard xmlns:android="http://schemas.android.com/apk/res/android"
 android:horizontalGap="0px"
 android:keyHeight="42dip"
 android:keyWidth="31%p"
 android:verticalGap="0px" >
 
 <Row>
  <Key
   android:codes="49"
   android:keyLabel="1" />
  <Key
   android:codes="50"
   android:keyLabel="2" />
  <Key
   android:codes="51"
   android:keyLabel="3" />
 </Row>
 
 <Row>
  <Key
   android:codes="52"
   android:keyLabel="4" />
  <Key
   android:codes="53"
   android:keyLabel="5" />
  <Key
   android:codes="54"
   android:keyLabel="6" />
 </Row>
 
 <Row>
  <Key
   android:codes="55"
   android:keyLabel="7" />
  <Key
   android:codes="56"
   android:keyLabel="8" />
  <Key
   android:codes="57"
   android:keyLabel="9" />
 </Row>
 
 <Row>
  <Key
   android:codes="-3"
   android:keyLabel="完成" />
  <Key
   android:codes="48"
   android:keyLabel="0" />
  <Key
   android:codes="-5"
   android:keyIcon="@drawable/sym_keyboard_delete" />
 </Row>
 
</Keyboard>

attrs.xml里面的樣式：

<!-- 支付密碼輸入框 -->
 <declare-styleable name="PasswordInputView">
  <attr name="borderWidth" format="dimension"/>
  <attr name="borderColor" format="color"/>
  <attr name="borderRadius" format="dimension"/>
  <attr name="passwordLength" format="integer"/>
  <attr name="passwordWidth" format="dimension"/>
  <attr name="passwordColor" format="color"/>
  <attr name="passwordRadius" format="dimension"/>
 </declare-styleable>

布局代碼：

<&#63;xml version="1.0" encoding="utf-8"&#63;>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:background="@color/main_bg_color" >
 
 <include
  android:id="@+id/title_ll"
  layout="@layout/common_actionbar"/>
 
 <TextView
  android:id="@+id/trader_pwd_set_tips_textview"
  
  android:layout_below="@+id/title_ll"
  android:layout_marginTop="25dip"
  android:layout_centerHorizontal="true"
  android:text="@string/trade_pwd_set_tips_text" />
 
 <ImageView
  android:id="@+id/line1_imageview"
  
  android:layout_below="@+id/trader_pwd_set_tips_textview"
  android:layout_marginTop="26dip"
  android:contentDescription="@string/content_description" />
 
 <com.acoe.demo.widget.PasswordInputView
  android:id="@+id/trader_pwd_set_pwd_edittext"
  android:layout_width="match_parent"
  android:layout_height="41dip"
  android:layout_below="@+id/line1_imageview"
  android:maxLength="6"
  android:background="@android:color/white" />
 
 <ImageView
  android:id="@+id/line2_imageview"
  
  android:layout_below="@+id/trader_pwd_set_pwd_edittext"
  android:contentDescription="@string/content_description" />
 
 <Button
  android:id="@+id/trader_pwd_set_next_button"
  
  android:layout_below="@+id/line2_imageview"
  android:layout_marginTop="25dip"
  android:text="@string/trade_pwd_set_next_text" />
 
 <android.inputmethodservice.KeyboardView
  android:id="@+id/keyboard_view" 
  android:layout_width="match_parent" 
  android:layout_height="240dip"
  android:layout_alignParentBottom="true"
  android:paddingTop="30dip"
  android:paddingLeft="13dip"
  android:paddingRight="13dip"
  android:focusable="true" 
  android:focusableInTouchMode="true" 
  android:visibility="invisible"/>
 
</RelativeLayout>

Activity代碼片段：

//=======在Activity成員變量中聲明部分代碼=======
/** 控件 */
 private PasswordInputView edtPwd;
 
//=======在Activity實(shí)例化控件部分代碼=======
// 初始化控件
  edtPwd = (PasswordInputView) findViewById(R.id.trader_pwd_set_pwd_edittext);
  edtPwd.setInputType(InputType.TYPE_NULL); // 屏蔽系統(tǒng)軟鍵盤(pán)
// 自定義軟鍵盤(pán)
  if (keyboardUtil == null) keyboardUtil = new NumKeyboardUtil(this, this, edtPwd);
  edtPwd.setOnTouchListener(new OnTouchListener() {
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    keyboardUtil.showKeyboard();
    return false;
   }
  });
 
//=======在Activity中重寫(xiě)onTouchEvent()方法，實(shí)現(xiàn)點(diǎn)擊空白處隱藏軟鍵盤(pán)=======
@Override
 public boolean onTouchEvent(MotionEvent event) {
  if(event.getAction() == MotionEvent.ACTION_DOWN){ 
    if(getCurrentFocus()!=null && getCurrentFocus().getWindowToken()!=null){
     keyboardUtil.hideKeyboard();
    }
  }
  return super.onTouchEvent(event);
 }

ps：如果把該密碼輸入框和其他類(lèi)型輸入框并用時(shí)要注意兩者之間焦點(diǎn)變化時(shí)將系統(tǒng)軟鍵盤(pán)和自定義的數(shù)字鍵盤(pán)隱藏，我的做法是給密碼輸入框綁定OnFacusChangeListener事件，來(lái)控制就好。如下：

edtPwd.setOnFocusChangeListener(new OnFocusChangeListener() {
   @Override
   public void onFocusChange(View v, boolean hasFocus) {
    if (hasFocus) {
     // 如果系統(tǒng)鍵盤(pán)是彈出狀態(tài)，先隱藏
     ((InputMethodManager) getSystemService(INPUT_METHOD_SERVICE))
     .hideSoftInputFromWindow(getCurrentFocus()
     .getWindowToken(),
     InputMethodManager.HIDE_NOT_ALWAYS);
     keyboardUtil.showKeyboard();
    } else {
     keyboardUtil.hideKeyboard();
    }
   }
  });

上述就是小編為大家分享的怎么在Android應(yīng)用中自定義一個(gè)數(shù)字鍵盤(pán)與密碼輸入框了，如果剛好有類(lèi)似的疑惑，不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí)，歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道。

標(biāo)題名稱(chēng)：怎么在Android應(yīng)用中自定義一個(gè)數(shù)字鍵盤(pán)與密碼輸入框
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怎么在Android應(yīng)用中自定義一個(gè)數(shù)字鍵盤(pán)與密碼輸入框