Android仿微信/支付宝密码输入框

<&＃63;xml version="1.0" encoding="utf-8"&＃63;> 
 

package com.suning.mobile.paysdk.view; 
import android.content.Context; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.util.AttributeSet; 
import android.view.KeyEvent; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import com.suning.mobile.paysdk.R; 
import com.suning.mobile.paysdk.utils.FunctionUtils; 
import com.suning.mobile.paysdk.utils.log.LogUtils; 
/** 
 * 
 * 〈一句话功能简述〉
 
 * 〈功能详细描述〉 简密输入框 
 */ 
public class SecurityPasswordEditText extends LinearLayout { 
 private EditText mEditText; 
 private ImageView oneTextView; 
 private ImageView twoTextView; 
 private ImageView threeTextView; 
 private ImageView fourTextView; 
 private ImageView fiveTextView; 
 private ImageView sixTextView; 
 LayoutInflater inflater; 
 ImageView[] imageViews; 
 View contentView; 
 public SecurityPasswordEditText(Context context, AttributeSet attrs) { 
  super(context, attrs); 
  inflater = LayoutInflater.from(context); 
  builder = new StringBuilder(); 
  initWidget(); 
 } 
 private void initWidget() { 
  cOntentView= inflater.inflate(R.layout.sdk_simple_pwd_widget, null); 
  mEditText = (EditText) contentView 
    .findViewById(R.id.sdk_pwd_edit_simple); 
  OneTextView= (ImageView) contentView 
    .findViewById(R.id.sdk_pwd_one_img); 
  twoTextView = (ImageView) contentView 
    .findViewById(R.id.sdk_pwd_two_img); 
  fourTextView = (ImageView) contentView 
    .findViewById(R.id.sdk_pwd_four_img); 
  fiveTextView = (ImageView) contentView 
    .findViewById(R.id.sdk_pwd_five_img); 
  sixTextView = (ImageView) contentView 
    .findViewById(R.id.sdk_pwd_six_img); 
  threeTextView = (ImageView) contentView 
    .findViewById(R.id.sdk_pwd_three_img); 
  LinearLayout.LayoutParams lParams = new LayoutParams( 
    LinearLayout.LayoutParams.MATCH_PARENT, 
    LinearLayout.LayoutParams.WRAP_CONTENT); 
  mEditText.addTextChangedListener(mTextWatcher); 
  mEditText.setOnKeyListener(keyListener); 
  imageViews = new ImageView[] { oneTextView, twoTextView, threeTextView, 
    fourTextView, fiveTextView, sixTextView }; 
  this.addView(contentView, lParams); 
 } 
 TextWatcher mTextWatcher = new TextWatcher() { 
  @Override 
  public void onTextChanged(CharSequence s, int start, int before, 
    int count) { 
  } 
  @Override 
  public void beforeTextChanged(CharSequence s, int start, int count, 
    int after) { 
  } 
  @Override 
  public void afterTextChanged(Editable s) { 
   if (s.toString().length() == ) { 
    return; 
   } 
   if (builder.length() <) { 
    builder.append(s.toString()); 
    setTextValue(); 
   } 
   s.delete(, s.length()); 
  } 
 }; 
 OnKeyListener keyListener = new OnKeyListener() { 
  @Override 
  public boolean onKey(View v, int keyCode, KeyEvent event) { 
   if (keyCode == KeyEvent.KEYCODE_DEL 
     && event.getAction() == KeyEvent.ACTION_UP) { 
    delTextValue(); 
    return true; 
   } 
   return false; 
  } 
 }; 
 private void setTextValue() { 
  String str = builder.toString(); 
  int len = str.length(); 
  if (len <= ) { 
   imageViews[len - ].setVisibility(View.VISIBLE); 
  } 
  if (len == ) { 
   LogUtils.i("回调"); 
   LogUtils.i("支付密码" + str); 
   if (mListener != null) { 
    mListener.onNumCompleted(str); 
   } 
   LogUtils.i("jone", builder.toString()); 
   FunctionUtils.hideSoftInputByView(getContext(), mEditText); 
  } 
 } 
 private void delTextValue() { 
  String str = builder.toString(); 
  int len = str.length(); 
  if (len == ) { 
   return; 
  } 
  if (len > && len <= ) { 
   builder.delete(len - , len); 
  } 
  imageViews[len - ].setVisibility(View.INVISIBLE); 
  ; 
 } 
 StringBuilder builder; 
 public interface SecurityEditCompleListener { 
  public void onNumCompleted(String num); 
 } 
 public SecurityEditCompleListener mListener; 
 public void setSecurityEditCompleListener( 
   SecurityEditCompleListener mListener) { 
  this.mListener = mListener; 
 } 
 public void clearSecurityEdit() { 
  if (builder != null) { 
   if (builder.length() == ) { 
    builder.delete(, ); 
   } 
  } 
  for (ImageView tv : imageViews) { 
   tv.setVisibility(View.INVISIBLE); 
  } 
 } 
 public EditText getSecurityEdit() { 
  return this.mEditText; 
 } 
}