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当用户输入字符后 ?EditText会自动在输入框的内部右侧出现删除按钮
重写EditText达到简化布局的效果
效果图:
继承EditText
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | ????package?com.example.myedittexttest;? import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.content.Context;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.graphics.Rect;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.graphics.drawable.Drawable;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.text.Editable;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.text.TextWatcher;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.util.AttributeSet;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.view.MotionEvent;import?<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>.widget.EditText;? public?class?MyEditText?extends?EditText {????private?final?String TAG =?"MyEditText";????private?Drawable dRight;????private?Rect rBounds;? ????public?MyEditText(Context paramContext) {????????super(paramContext);????????initEditText();????}? ????public?MyEditText(Context paramContext, AttributeSet paramAttributeSet) {????????super(paramContext, paramAttributeSet);????????initEditText();????}? ????public?MyEditText(Context paramContext, AttributeSet paramAttributeSet,int?paramInt) {????????super(paramContext, paramAttributeSet, paramInt);????????initEditText();????}? ????// 初始化edittext 控件????private?void?initEditText() {????????setEditTextDrawable();????????addTextChangedListener(new?TextWatcher() {?// 对文本内容改变进行监听????????????@Override????????????public?void?afterTextChanged(Editable paramEditable) {????????????}? ????????????@Override????????????public?void?beforeTextChanged(CharSequence paramCharSequence,?intparamInt1,?int?paramInt2,?int?paramInt3) {????????????}? ????????????@Override????????????public?void?onTextChanged(CharSequence paramCharSequence,?intparamInt1,?int?paramInt2,?int?paramInt3) {????????????????MyEditText.this.setEditTextDrawable();????????????}????????});????}? ????// 控制图片的显示????public?void?setEditTextDrawable() {????????if?(getText().toString().length() ==?0) {????????????setCompoundDrawables(null,?null,?null,?null);????????}?else?{????????????setCompoundDrawables(null,?null,?this.dRight,?null);????????}????}? ????@Override????protected?void?onDetachedFromWindow() {????????super.onDetachedFromWindow();????????this.dRight =?null;????????this.rBounds =?null;? ????}? ????/**?????* 添加触摸事件 点击之后 出现 清空editText的效果?????*/????@Override????public?boolean?onTouchEvent(MotionEvent paramMotionEvent) {????????if?((this.dRight !=?null) && (paramMotionEvent.getAction() ==?1)) {????????????this.rBounds =?this.dRight.getBounds();????????????int?i = (int) paramMotionEvent.getRawX();// 距离屏幕的距离????????????// int i = (int) paramMotionEvent.getX();//距离边框的距离????????????if?(i > getRight() -?3?*?this.rBounds.width()) {????????????????setText("");????????????????paramMotionEvent.setAction(MotionEvent.ACTION_CANCEL);????????????}????????}????????return?super.onTouchEvent(paramMotionEvent);????}? ????/**?????* 显示右侧X图片的?????*?????* 左上右下?????*/????@Override????public?void?setCompoundDrawables(Drawable paramDrawable1, Drawable paramDrawable2, Drawable paramDrawable3, Drawable paramDrawable4) {????????if?(paramDrawable3 !=?null)????????????this.dRight = paramDrawable3;????????super.setCompoundDrawables(paramDrawable1, paramDrawable2, paramDrawable3, paramDrawable4);????}} |
XML布局:
?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | ????<RelativeLayout xmlns:<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>="http://schemas.<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.com/apk/res/<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>"????xmlns:tools="http://schemas.<a title="android" href="http://www.android-study.com/jiemiansheji/590.html">android</a>.com/tools"????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_width="match_parent"????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_height="match_parent"????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingBottom="@dimen/activity_vertical_margin"????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingLeft="@dimen/activity_horizontal_margin"????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingRight="@dimen/activity_horizontal_margin"????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:paddingTop="@dimen/activity_vertical_margin"????tools:context=".MainActivity"?>? ????<com.example.myedittexttest.MyEditText????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:id="@+id/edit_text"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_width="fill_parent"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_height="50dp"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_marginTop="50dp"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:background="#88aaff"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:drawableRight="@drawable/edit_clear"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:textCursorDrawable="@null"?/>? ????<Button????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:id="@+id/button1"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_width="wrap_content"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_height="wrap_content"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_below="@+id/edit_text"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_marginTop="84dp"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:layout_toRightOf="@+id/textView1"????????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:text="Button"?/>? </RelativeLayout> |
XML中的属性简介:
显示右侧的X 按钮:
1 2 | <a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:drawableRight="@drawable/edit_clear" |
设置光标的颜色 ? ?设置@null ?表示光标的颜色和输入框的字体颜色相同
1 2 | <a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:textCursorDrawable="@null" |
显示隐藏光标
1 2 3 | ????<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:cursorVisible="true"//显示<a title="android"?href="http://www.android-study.com/jiemiansheji/590.html">android</a>:cursorVisible="false"//隐藏???? |
有误的地方请指正
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | ????//┏┓ ┏┓//┏┛┻━━━┛┻┓//┃ ┃ //┃ ━ ┃//┃ ┳┛ ┗┳ ┃//┃ ┃//┃ ┻ ┃//┃ ┃//┗━┓ ┏━┛//? ┃ ┃?? 神兽保佑 //? ┃ ┃?? 代码无BUG！//? ┃ ┗━━━┓//? ┃ ┣┓//? ┃ ┏┛//? ┗┓┓┏━┳┓┏┛//??? ┃┫┫ ┃┫┫//??? ┗┻┛ ┗┻┛???? |
关注微信号：javalearns?? 随时随地学Java
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随时随地学Java