Android自定义EditText实现登录界面

概述本文实例为大家分享了Android自定义EditText实现登录界面的具体代码，供大家参考，具体内容如下

本文实例为大家分享了AndroID自定义EditText实现登录界面的具体代码，供大家参考，具体内容如下

先看效果图：

自定义edittext 控件，监听focus和textchange 状态 实现是否显示删除图片。

public class ClearEditText extends EditText implements OnFocuschangelistener,TextWatcher {   private Drawable right;  private boolean hasfocus;  private Drawable mClearDrawable;   public ClearEditText(Context context) {   this(context,null);   }   public ClearEditText(Context context,AttributeSet attrs) {   // 这个属性不加 没法用   this(context,attrs,androID.R.attr.editTextStyle);   }   public ClearEditText(Context context,AttributeSet attrs,int defStyle) {   super(context,defStyle);   // 初始化删除的资源图片   mClearDrawable = getCompoundDrawables()[2];   if (mClearDrawable == null) {    mClearDrawable = getResources().getDrawable(R.drawable.ic_close1);   }   mClearDrawable.setBounds(0,mClearDrawable.getIntrinsicWIDth(),mClearDrawable.getIntrinsicHeight());    clearText(false);    setonFocuschangelistener(this);   addTextChangedListener(this);   }    @OverrIDe  public voID onFocusChange(VIEw v,boolean hasfocus) {   this.hasfocus = hasfocus;   if (hasfocus) {    clearText(getText().length() > 0);   } else {    clearText(false);   }   }   @OverrIDe  public voID onTextChanged(CharSequence text,int start,int lengthBefore,int lengthAfter) {   // Todo auto-generated method stub   if (hasfocus) {    clearText(text.length() > 0);   }   }   private voID clearText(boolean visible) {   if (visible) {    right = mClearDrawable;    } else {    right = null;   }   setCompoundDrawables(getCompoundDrawables()[0],getCompoundDrawables()[1],right,getCompoundDrawables()[3]);    // right.setBounds(0,right.getIntrinsicWIDth(),// right.getIntrinsicHeight());   }     //getTotalpaddingRight 返回 又padding加上图片占据的宽度 在这个范围内 即判断是否点击了删除按钮  @OverrIDe  public boolean ontouchEvent(MotionEvent event) {   if (event.getAction() == MotionEvent.ACTION_UP) {    if (getCompoundDrawables()[2] != null) {      boolean t = event.getX() > (getWIDth() - getTotalpaddingRight())       && (event.getX() < ((getWIDth() - getpaddingRight())));      if (t) {      this.setText("");     }    }   }    return super.ontouchEvent(event);  }   @OverrIDe  public voID afterTextChanged(Editable arg0) {   // Todo auto-generated method stub   }   @OverrIDe  public voID beforeTextChanged(CharSequence arg0,int arg1,int arg2,int arg3) {   // Todo auto-generated method stub   }   /**   * 设置晃动动画   */  public voID setShakeAnimation() {   this.setAnimation(shakeAnimation(5));  }   // 可以设置1秒钟晃动s下  public static Animation shakeAnimation(int s) {   Animation translateAnimation = new TranslateAnimation(0,10,0);   translateAnimation.setInterpolator(new CycleInterpolator(s));   translateAnimation.setDuration(1000);   return translateAnimation;  }  } 

自定义TextVIEw 实现字体从上到下显示：

public class CustomText extends TextVIEw {   private String text;  private Paint paint;  private Rect rect = new Rect();  private int inittopdistance = 8;   public CustomText(Context context) {   super(context,null);   // Todo auto-generated constructor stub  }   public CustomText(Context context,AttributeSet attrs) {   this(context,0);   // Todo auto-generated constructor stub  }   public CustomText(Context context,defStyle);   text = (String) getText();    displayMetrics metric = new displayMetrics();   WindowManager windowmanager = (WindowManager) context     .getSystemService(Context.WINDOW_SERVICE);   windowmanager.getDefaultdisplay().getMetrics(metric);   //得到字体大小   int size = (int) getTextSize();   //转换成SP   int s= (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,size,metric);    paint = new Paint(Paint.ANTI_AliAS_FLAG);   paint.setDither(true);   paint.setcolor(0xffffffff);   if(s!=0)   paint.setTextSize(s);   Typeface t= Typeface.createFromAsset(context.getResources().getAssets(),"Fonts/Font.TTF");      paint.setTypeface(t);   paint.setShadowLayer(60,30,0xff00ffff);   } // @OverrIDe // protected voID onMeasure(int wIDthMeasureSpec,int heightmeasureSpec) { //  ////  super.onMeasure(wIDthMeasureSpec,heightmeasureSpec); //  int modeWIDth=MeasureSpec.getMode(wIDthMeasureSpec); //  int modeHeight=MeasureSpec.getMode(heightmeasureSpec); //  int wIDthSize=MeasureSpec.getSize(wIDthMeasureSpec); //  int heightSize=MeasureSpec.getSize(heightmeasureSpec); //  //  int wIDth=0; //  int heigh=0; //  if(modeWIDth==MeasureSpec.AT_MOST) //   //   wIDth=getMaxTextWdith(getStrings())+getpaddingleft()+getpaddingRight(); //   //  if(modeHeight==MeasureSpec.AT_MOST) //   heigh=getMaxTextHeight(getStrings())+getpaddingtop()+getpaddingBottom(); //  //  setMeasuredDimension(wIDth=modeWIDth==MeasureSpec.AT_MOST?wIDth:wIDthSize,//    height=modeHeight==MeasureSpec.AT_MOST?height:heightSize); //  //  // }       @OverrIDe  protected voID onSizeChanged(int w,int h,int olDW,int oldh) {   // Todo auto-generated method stub   super.onSizeChanged(w,h,olDW,oldh);   wIDth = w;   height = h;  }   private voID measureText(String str) {    paint.getTextBounds(str,str.length(),rect);   FontMetrics fm = paint.getFontMetrics();   textHeight = (int) (fm.ascent + fm.descent);  }   private int textHeight;  private int wIDth;  private int height;  private int num;  //转化为 单个字的字符串  public String[] getStrings(){      num = text.length();   String[] strings = new String[num];   for (int i = 0; i < num; i++) {     char c = text.charat(i);    strings[i] = String.valueOf(c);   }   return strings;  }  /**返回字体最长的宽度   * @param strs   * @return   */  public int getMaxTextWdith(String[] strs){   int w=0;   for(int i=0;i<strs.length;i++){    measureText(strs[i]);    w=Math.max(rect.wIDth(),w);       }      return w;        }  /**返回字体最高的高度   * @param strs   * @return   */  public int getMaxTextHeight(String[] strs){   int h=0;   for(int i=0;i<strs.length;i++){    measureText(strs[i]);       h=Math.max(-textHeight,h);       }   return h;     }   @OverrIDe  protected voID onDraw(Canvas canvas) {    String[] strings=getStrings();    float starty = 1.0f * height / num;   //Y坐标变化   float changeY = 0;   for (int j = 0; j < num; j++) {    //测量字体宽度和高度    measureText(strings[j]);    //没个字体上下的间隔    changeY = starty * j;    int left=getWIDth() / 2 - rect.wIDth() / 2      + getpaddingleft() + getpaddingRight();    int top=(int) (starty/2-textHeight+ changeY + getpaddingtop() + getpaddingBottom());        canvas.drawText(strings[j],left,top,paint);   }   }  } 

布局xml：

<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"  xmlns:tools="http://schemas.androID.com/tools"  androID:layout_wIDth="match_parent"  androID:layout_height="match_parent"  androID:orIEntation="vertical" >   <relativeLayout   androID:ID="@+ID/meishi"   androID:layout_wIDth="match_parent"   androID:layout_height="0dp"   androID:layout_weight="1"   androID:background="@drawable/ic_meishi" >    <com.example.eIDttext.CustomText    androID:ID="@+ID/tttt"    androID:layout_wIDth="wrap_content"    androID:layout_height="match_parent"    androID:layout_alignParentRight="true"    androID:text="味道"    androID:textSize="40sp"    />  </relativeLayout>   <linearLayout   androID:layout_wIDth="match_parent"   androID:layout_height="0dp"   androID:layout_weight="1"   androID:orIEntation="vertical" >    <relativeLayout    androID:ID="@+ID/count"    androID:layout_wIDth="fill_parent"    androID:layout_height="wrap_content"    androID:padding="8dp"    androID:gravity="center"    androID:layout_margintop="20dp"     >     <TextVIEw     androID:ID="@+ID/text_count"     androID:layout_wIDth="wrap_content"     androID:layout_height="wrap_content"     androID:padding="8dp"     androID:text="帐号"          />     <com.example.eIDttext.ClearEditText         androID:layout_wIDth="fill_parent"     androID:layout_height="wrap_content"     androID:layout_marginRight="20dp"     androID:layout_toRightOf="@+ID/text_count"     androID:background="@drawable/edittext"     androID:drawableRight="@drawable/ic_close1"     androID:gravity="center_vertical"     androID:hint="请输入帐号"     androID:textSize="16sp"     androID:padding="8dp"              androID:singleline="true" >    </com.example.eIDttext.ClearEditText>   </relativeLayout>    <relativeLayout    androID:ID="@+ID/password"    androID:layout_wIDth="fill_parent"    androID:layout_height="wrap_content"    androID:padding="8dp"         >     <TextVIEw     androID:ID="@+ID/text_password"     androID:layout_wIDth="wrap_content"     androID:layout_height="wrap_content"     androID:padding="8dp"     androID:text="密码" />     <com.example.eIDttext.ClearEditText     androID:layout_wIDth="fill_parent"     androID:layout_height="wrap_content"     androID:layout_marginRight="20dp"     androID:layout_toRightOf="@+ID/text_password"     androID:background="@drawable/edittext"     androID:drawableRight="@drawable/ic_close1"     androID:gravity="center_vertical"     androID:hint="请输入密码"     androID:padding="8dp"      androID:textSize="16sp"     androID:singleline="true" >    </com.example.eIDttext.ClearEditText>   </relativeLayout>    <relativeLayout    androID:layout_wIDth="match_parent"    androID:layout_height="wrap_content"    androID:padding="16dp" >     <button     androID:ID="@+ID/login"     androID:layout_wIDth="wrap_content"     androID:layout_height="30dp"     androID:layout_marginleft="50dp"     androID:textSize="16sp"     androID:background="@drawable/button_selector"     androID:text="登录"          />     <button     androID:layout_wIDth="wrap_content"     androID:layout_height="30dp"     androID:layout_marginleft="80dp"     androID:layout_toRightOf="@+ID/login"     androID:background="@drawable/button_selector"     androID:text="注册"     androID:textSize="16sp" />   </relativeLayout>  </linearLayout>  </linearLayout>

button_selector   xml

<?xml version="1.0" enCoding="utf-8"?> <selector xmlns:androID="http://schemas.androID.com/apk/res/androID" >  <item androID:state_pressed="true"   androID:drawable="@drawable/button_press" />"  <item androID:drawable="@drawable/button" />  </selector> 

press:

<?xml version="1.0" enCoding="utf-8"?>   <shape androID:shape="rectangle"   xmlns:androID="http://schemas.androID.com/apk/res/androID">    <gradIEnt     androID:startcolor="@color/deep_red"     androID:centercolor="#ffffffff"     androID:endcolor="@color/oranger_red"     androID:angle="90"       >     </gradIEnt>    <corners androID:radius="15dp" />    <stroke androID:wIDth="1px"     androID:color="#FF6666"/>  </shape> 

normal:

<?xml version="1.0" enCoding="utf-8"?>   <shape androID:shape="rectangle"   xmlns:androID="http://schemas.androID.com/apk/res/androID">    <gradIEnt     androID:startcolor="#FF3333"     androID:centercolor="#ffffffff"     androID:endcolor="#FF9966"     androID:angle="90"      >     </gradIEnt>    <corners androID:radius="15dp" />    <stroke androID:wIDth="1px"     androID:color="#ededed"/>  </shape> 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

总结

以上是内存溢出为你收集整理的Android自定义EditText实现登录界面全部内容，希望文章能够帮你解决Android自定义EditText实现登录界面所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。