先上效果圖讓大家看看

1.VerficationCodeInput.Java

/** * 輸入驗證碼的自定義view * */ public class VerificationCodeInput extends LinearLayout implements TextWatcher, View.OnKeyListener{private final static String TYPE_NUMBER = "number"; private final static String TYPE_TEXT = "text"; private final static String TYPE_PASSWORD = "password"; private final static String TYPE_PHONE = "phone"; private static final String TAG = "VerificationCodeInput"; private int box = 4; private int boxWidth = 60; private int boxHeight = 60; private int childHPadding = 14; private int childVPadding = 14; private String inputType = TYPE_PASSWORD; private Drawable boxBgFocus = null; private Drawable boxBgNormal = null; private Listener listener; private boolean focus = false; private List<EditText> mEditTextList = new ArrayList<>(); private int currentPosition = 0; public VerificationCodeInput(Context context, AttributeSet attrs) {super(context, attrs); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.vericationCodeInput); box = a.getInt(R.styleable.vericationCodeInput_box, 4); childHPadding = (int) a.getDimension(R.styleable.vericationCodeInput_child_h_padding, 0); childVPadding = (int) a.getDimension(R.styleable.vericationCodeInput_child_v_padding, 0); boxBgFocus = a.getDrawable(R.styleable.vericationCodeInput_box_bg_focus); boxBgNormal = a.getDrawable(R.styleable.vericationCodeInput_box_bg_normal); inputType = a.getString(R.styleable.vericationCodeInput_inputType); boxWidth = (int) a.getDimension(R.styleable.vericationCodeInput_child_width, boxWidth); boxHeight = (int) a.getDimension(R.styleable.vericationCodeInput_child_height, boxHeight); initViews(); }@Override protected void onAttachedToWindow() {super.onAttachedToWindow(); }@Override protected void onDetachedFromWindow() {super.onDetachedFromWindow(); }private void initViews() {for (int i = 0; i < box; i++) {EditText editText = new EditText(getContext()); LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(boxWidth, boxHeight); layoutParams.bottomMargin = childVPadding; layoutParams.topMargin = childVPadding; layoutParams.leftMargin = childHPadding; layoutParams.rightMargin = childHPadding; layoutParams.gravity = Gravity.CENTER; editText.setOnKeyListener(this); if(i == 0)setBg(editText, true); else setBg(editText, false); editText.setTextColor(Color.BLACK); editText.setLayoutParams(layoutParams); editText.setGravity(Gravity.CENTER); editText.setInputType(EditorInfo.TYPE_CLASS_PHONE); editText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(1)}); // if (TYPE_NUMBER.equals(inputType)) { // editText.setInputType(InputType.TYPE_CLASS_NUMBER); // } else if (TYPE_PASSWORD.equals(inputType)){ // editText.setTransformationMethod(PasswordTransformationMethod.getInstance()); // } else if (TYPE_TEXT.equals(inputType)){ // editText.setInputType(InputType.TYPE_CLASS_TEXT); // } else if (TYPE_PHONE.equals(inputType)){ // editText.setInputType(InputType.TYPE_CLASS_PHONE); // // } editText.setId(i); editText.setEms(1); editText.addTextChangedListener(this); addView(editText,i); mEditTextList.add(editText); }}private void backFocus() {int count = getChildCount(); EditText editText ; for (int i = count-1; i>= 0; i--) {editText = (EditText) getChildAt(i); if (editText.getText().length() == 1) {editText.requestFocus(); setBg(mEditTextList.get(i),true); //setBg(mEditTextList.get(i-1),true); editText.setSelection(1); return; }}}private void focus() {int count = getChildCount(); EditText editText ; for (int i = 0; i< count; i++) {editText = (EditText) getChildAt(i); if (editText.getText().length() < 1) {editText.requestFocus(); return; }}}private void setBg(EditText editText, boolean focus) {if (boxBgNormal != null && !focus) {editText.setBackground(boxBgNormal); } else if (boxBgFocus != null && focus) {editText.setBackground(boxBgFocus); }}private void setBg(){int count = getChildCount(); EditText editText ; for(int i = 0; i< count; i++){editText = (EditText) getChildAt(i); if (boxBgNormal != null && !focus) {editText.setBackground(boxBgNormal); } else if (boxBgFocus != null && focus) {editText.setBackground(boxBgFocus); }}}private void checkAndCommit() {StringBuilder stringBuilder = new StringBuilder(); boolean full = true; for (int i = 0 ;i < box; i++){EditText editText = (EditText) getChildAt(i); String content = editText.getText().toString(); if ( content.length() == 0) {full = false; break; } else {stringBuilder.append(content); }}Log.d(TAG, "checkAndCommit:" + stringBuilder.toString()); if (full){if (listener != null) {listener.onComplete(stringBuilder.toString()); setEnabled(false); }}}@Override public void setEnabled(boolean enabled) {int childCount = getChildCount(); for (int i = 0; i < childCount; i++) {View child = getChildAt(i); child.setEnabled(enabled); }}public void setOnCompleteListener(Listener listener){this.listener = listener; }@Override public LayoutParams generateLayoutParams(AttributeSet attrs) {return new LinearLayout.LayoutParams(getContext(), attrs); }@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {super.onMeasure(widthMeasureSpec, heightMeasureSpec); Log.d(getClass().getName(), "onMeasure"); int count = getChildCount(); for (int i = 0; i < count; i++) {View child = getChildAt(i); this.measureChild(child, widthMeasureSpec, heightMeasureSpec); }if (count > 0) {View child = getChildAt(0); int cHeight = child.getMeasuredHeight(); int cWidth = child.getMeasuredWidth(); int maxH = cHeight + 2 * childVPadding; int maxW = (cWidth + childHPadding) * box + childHPadding; setMeasuredDimension(resolveSize(maxW, widthMeasureSpec), resolveSize(maxH, heightMeasureSpec)); }}@Override protected void onLayout(boolean changed, int l, int t, int r, int b) {Log.d(getClass().getName(), "onLayout"); int childCount = getChildCount(); for (int i = 0; i < childCount; i++) {View child = getChildAt(i); child.setVisibility(View.VISIBLE); int cWidth = child.getMeasuredWidth(); int cHeight = child.getMeasuredHeight(); int cl = (i) * (cWidth + childHPadding); int cr = cl + cWidth; int ct = childVPadding; int cb = ct + cHeight; child.layout(cl, ct, cr, cb); }}@Override public void beforeTextChanged(CharSequence s, int start, int count, int after) {}@Override public void onTextChanged(CharSequence s, int start, int before, int count) {if (start == 0 && count >= 1 && currentPosition != mEditTextList.size() - 1) {currentPosition++; mEditTextList.get(currentPosition).requestFocus(); setBg(mEditTextList.get(currentPosition),true); setBg(mEditTextList.get(currentPosition-1),false); }}@Override public void afterTextChanged(Editable s) {if (s.length() == 0) {} else {focus(); checkAndCommit(); }}@Override public boolean onKey(View view, int keyCode, KeyEvent event) {EditText editText = (EditText) view; if (keyCode == KeyEvent.KEYCODE_DEL && editText.getText().length() == 0) {int action = event.getAction(); if (currentPosition != 0 && action == KeyEvent.ACTION_DOWN) {currentPosition--; mEditTextList.get(currentPosition).requestFocus(); setBg(mEditTextList.get(currentPosition),true); setBg(mEditTextList.get(currentPosition+1),false); mEditTextList.get(currentPosition).setText(""); }}return false; }public interface Listener {void onComplete(String content); }}

2.attrs.XML

<?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="vericationCodeInput"> <attr name="box" format="integer" /> <attr name="child_h_padding" format="dimension"/> <attr name="child_v_padding" format="dimension"/> <attr name="child_width" format="dimension"/> <attr name="child_height" format="dimension"/> <attr name="padding" format="dimension"/> <attr name="box_bg_focus" format="reference"/> <attr name="box_bg_normal" format="reference"/> <attr name="inputType" format="string"/> </declare-styleable> </resources> 3.輸入框輸入文字和沒輸入文字不同的狀態

verification_edit_bg_focus.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <solid android:color="#FFFFFF" /> <corners android:radius="2dip" /> <stroke android:width="3dip" android:color="#ffee33" /> </shape> verification_edit_bg_normal.xml

<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android"> <solid android:color="#FaFafa" /> <corners android:radius="2dip" /> <stroke android:width="1dip" android:color="#BDC7D8" /> </shape> 4.在Activity中使用

public class YanZhenMaActivity extends Activity {@Override protected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.yanzhen_activity); } } 布局文件

<TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="輸入驗證碼：" android:padding="12dp" /> <com.nuoyuan.njs.VerificationCodeInput android:digits="1234567890." android:id="@+id/verificationCodeInput" android:layout_width="wrap_content" android:layout_height="wrap_content" ver:box="6" ver:box_bg_normal="@drawable/verification_edit_bg_normal" ver:box_bg_focus="@drawable/verification_edit_bg_focus" ver:child_h_padding="5dp" android:layout_centerInParent="true" android:layout_marginBottom="16dp" /> 好了，到這里，自定義驗證碼輸入框完成。。。。。。。。。。。。。。。。。。。。。。

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