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@ -36,16 +36,26 @@ import net.micode.notes.R;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @classname: NoteEditText
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* @methodname
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* @description:
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* @date: 2023/12/24 9:22
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* @author: Xia Yanbo
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* @param:
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* @param:
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* @param:
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* @return:
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*/
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public class NoteEditText extends EditText {
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private static final String TAG = "NoteEditText";
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private int mIndex;
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private static final String TAG = "NoteEditText";//标签，分类接收特定信息
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private int mIndex;//声明文本的索引
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private int mSelectionStartBeforeDelete;
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//声明字符串常量，标志电话、网址、邮件
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private static final String SCHEME_TEL = "tel:" ;
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private static final String SCHEME_HTTP = "http:" ;
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private static final String SCHEME_EMAIL = "mailto:" ;
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//设置映射，将文本内容拼接成完整的网址
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private static final Map<String, Integer> sSchemaActionResMap = new HashMap<String, Integer>();
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static {
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sSchemaActionResMap.put(SCHEME_TEL, R.string.note_link_tel);
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@ -55,53 +65,65 @@ public class NoteEditText extends EditText {
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/**
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* Call by the {@link NoteEditActivity} to delete or add edit text
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* 可以用作往整个文本里添加以及删除文本，会被NoteEditActivity时常调用
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*/
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public interface OnTextViewChangeListener {
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/**
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* Delete current edit text when {@link KeyEvent#KEYCODE_DEL} happens
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* and the text is null
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* 当按下delete时删除编辑的文字
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*/
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void onEditTextDelete(int index, String text);
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/**
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* Add edit text after current edit text when {@link KeyEvent#KEYCODE_ENTER}
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* happen
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* 当按下enter时添加编辑的文本到文本中
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*/
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void onEditTextEnter(int index, String text);
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/**
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* Hide or show item option when text change
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* 当文字发生变化时显示或者隐藏起设置
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*/
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void onTextChange(int index, boolean hasText);
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}
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//声明文本视图变化的监听器
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private OnTextViewChangeListener mOnTextViewChangeListener;
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//实例化NoteEditText对象，
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public NoteEditText(Context context) {
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super(context, null);
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mIndex = 0;
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}
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//为本本编辑设置一个索引
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public void setIndex(int index) {
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mIndex = index;
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}
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//直接调用父类，定义好文本视图变化的监听器
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public void setOnTextViewChangeListener(OnTextViewChangeListener listener) {
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mOnTextViewChangeListener = listener;
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}
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//NoteEditText的构造函数，通过文本编辑风格的参数集实例化
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public NoteEditText(Context context, AttributeSet attrs) {
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super(context, attrs, android.R.attr.editTextStyle);
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}
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//NoteEditText的构造函数，通过文本编辑风格的参数集实例化，支持用户自定义风格
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public NoteEditText(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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super(context, attrs, defStyle);//允许自定义风格
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// TODO Auto-generated constructor stub
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}
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/**
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* @classname: NoteEditText
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* @methodname onTouchEvent
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* @description:根据得到的用户采取的动作（事件）类型进行相应的光标的设置
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* @date: 2023/12/24 10:05
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* @author: Xia Yanbo
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* @param:event 具体的动作动作事件
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* @return:boolean 表示是否成功
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*/
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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switch (event.getAction()) {
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switch (event.getAction()) {//对动作事件进行分类的判别
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case MotionEvent.ACTION_DOWN:
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int x = (int) event.getX();
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@ -112,15 +134,24 @@ public class NoteEditText extends EditText {
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y += getScrollY();
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Layout layout = getLayout();
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int line = layout.getLineForVertical(y);
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int off = layout.getOffsetForHorizontal(line, x);
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int line = layout.getLineForVertical(y);//直接获取行数
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int off = layout.getOffsetForHorizontal(line, x);//从边界起数获得偏移
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Selection.setSelection(getText(), off);
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break;
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}
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return super.onTouchEvent(event);
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return super.onTouchEvent(event);//再调用父类的方法进行后续的处理
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}
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/**
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* @classname: NoteEditText
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* @methodname onKeyDown
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* @description:监听键盘按键按下
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* @date: 2023/12/24 10:15
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* @author: Xia Yanbo
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* @param:keyCode 按键的编码值
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* @param:event 按键的具体事件
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* @return:boolean 表示判断执行的过程是否顺利
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*/
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@Override
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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switch (keyCode) {
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@ -137,7 +168,16 @@ public class NoteEditText extends EditText {
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}
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return super.onKeyDown(keyCode, event);
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}
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/**
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* @classname: NoteEditText
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* @methodname onKeyUp
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* @description:监听键盘按键抬起
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* @date: 2023/12/24 10:15
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* @author: Xia Yanbo
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* @param:keyCode 按键的编码值
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* @param:event 按键的具体事件
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* @return:boolean 表示判断执行的过程是否顺利
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*/
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@Override
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public boolean onKeyUp(int keyCode, KeyEvent event) {
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switch(keyCode) {
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@ -166,11 +206,20 @@ public class NoteEditText extends EditText {
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}
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return super.onKeyUp(keyCode, event);
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}
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/**
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* @classname: NoteEditText
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* @methodname onFocusChanged
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* @description:对应当前视图的焦点改变
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* @date: 2023/12/24 10:25
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* @author: Xia Yanbo
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* @param:focused 焦点改变或者还未改变
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* @param:direction 改变方向？
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* @param:reviouslyFocusedRect 上一个焦点所关注的视图
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*/
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@Override
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protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
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if (mOnTextViewChangeListener != null) {
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if (!focused && TextUtils.isEmpty(getText())) {
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if (!focused && TextUtils.isEmpty(getText())) {//当没有输入，关注的视图也发生改变，设置隐藏
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mOnTextViewChangeListener.onTextChange(mIndex, false);
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} else {
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mOnTextViewChangeListener.onTextChange(mIndex, true);
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@ -178,19 +227,27 @@ public class NoteEditText extends EditText {
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}
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super.onFocusChanged(focused, direction, previouslyFocusedRect);
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}
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/**
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* @classname: NoteEditText
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* @methodname onCreateContextMenu
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* @description:创建文本的上下文菜单
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* @date: 2023/12/24 10:34
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* @author: Xia Yanbo
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* @param:contextMenu 现有的上下文菜单
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*/
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@Override
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protected void onCreateContextMenu(ContextMenu menu) {
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if (getText() instanceof Spanned) {
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int selStart = getSelectionStart();
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int selEnd = getSelectionEnd();
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if (getText() instanceof Spanned) {//检查文本的类型 Spanned是一个接口
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int selStart = getSelectionStart();//所选择文本的开始位置
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int selEnd = getSelectionEnd();//所选择文本的结束位置
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//确定选择开始的较小值和较大值，方便直接做差
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int min = Math.min(selStart, selEnd);
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int max = Math.max(selStart, selEnd);
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final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);
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//获取选择的文本范围内获取所有的 URLSpan 对象。URLSpan 是用于表示文本中的链接的。
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final URLSpan[] urls = ((Spanned) getText()).getSpans(min, max, URLSpan.class);//获取范围
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if (urls.length == 1) {
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int defaultResId = 0;
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//根据URL获取资源
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for(String schema: sSchemaActionResMap.keySet()) {
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if(urls[0].getURL().indexOf(schema) >= 0) {
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defaultResId = sSchemaActionResMap.get(schema);
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@ -201,9 +258,10 @@ public class NoteEditText extends EditText {
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if (defaultResId == 0) {
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defaultResId = R.string.note_link_other;
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}
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//添加菜单项
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menu.add(0, 0, 0, defaultResId).setOnMenuItemClickListener(
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new OnMenuItemClickListener() {
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//设置监听器，放菜单项被点击，触发链接
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public boolean onMenuItemClick(MenuItem item) {
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// goto a new intent
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urls[0].onClick(NoteEditText.this);
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@ -212,6 +270,6 @@ public class NoteEditText extends EditText {
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});
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}
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}
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super.onCreateContextMenu(menu);
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super.onCreateContextMenu(menu);//调用父类方法
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}
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}
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