Android 自定义EditText（ 登录界面）

转载请标明出处：http://blog.csdn.net/u013598111/article/details/50071647，本文出自：【JunTao_sun】

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。

<span style="font-size:18px;">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, attrs, 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, 0, mClearDrawable.getIntrinsicWidth(),mClearDrawable.getIntrinsicHeight());clearText(false);setOnFocusChangeListener(this);addTextChangedListener(this);}   @Overridepublic void onFocusChange(View v, boolean hasfocus) {this.hasfocus = hasfocus;if (hasfocus) {clearText(getText().length() > 0);} else {clearText(false);}}@Overridepublic void onTextChanged(CharSequence text, int start, int lengthBefore,int lengthAfter) {// TODO Auto-generated method stubif (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, 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@Overridepublic 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);}@Overridepublic void afterTextChanged(Editable arg0) {// TODO Auto-generated method stub}@Overridepublic 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, 0);translateAnimation.setInterpolator(new CycleInterpolator(s));translateAnimation.setDuration(1000);return translateAnimation;}}</span>

自定义TextView 实现字体从上到下显示：

<span style="font-size:18px;">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, attrs, 0);// TODO Auto-generated constructor stub}public CustomText(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, 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SPint  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, 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);//////}@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh) {// TODO Auto-generated method stubsuper.onSizeChanged(w, h, oldw, oldh);width = w;height = h;}private void measureText(String str) {paint.getTextBounds(str, 0, 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;}@Overrideprotected 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);}}}</span>

布局xml：

<span style="font-size:18px;"><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></span>

button_selector   xml

<span style="font-size:18px;"><?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></span>

press:

<span style="font-size:18px;"><?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>          </span>

normal:

<span style="font-size:18px;"><?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>          </span>