Java Android setEllipsize在扩展EditText的类上不起作用
我有一个扩展EditText的类,在这个类上,我试图使文本在文本太长时设置为setEllipsize。由于某种原因,我所有的努力都没有成功。 似乎我可以在文本视图中水平滚动文本。。。 有人能给我建议如何使它起作用吗。 (到目前为止,我已经尝试过将这些功能和 这是我在代码中的角色:Java Android setEllipsize在扩展EditText的类上不起作用,java,android,android-edittext,scrollview,Java,Android,Android Edittext,Scrollview,我有一个扩展EditText的类,在这个类上,我试图使文本在文本太长时设置为setEllipsize。由于某种原因,我所有的努力都没有成功。 似乎我可以在文本视图中水平滚动文本。。。 有人能给我建议如何使它起作用吗。 (到目前为止,我已经尝试过将这些功能和 这是我在代码中的角色: public class LMEditTextAutoSize extends EditText { private boolean autoSize; public LMEditTextAutoSize(Conte
public class LMEditTextAutoSize extends EditText {
private boolean autoSize;
public LMEditTextAutoSize(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mTextSize = getTextSize();
mMaxTextSize = getTextSize();
}
public LMEditTextAutoSize(Context context, AttributeSet attrs) {
super(context, attrs);
mTextSize = getTextSize();
mMaxTextSize = getTextSize();
}
public LMEditTextAutoSize(Context context) {
super(context);
mTextSize = getTextSize();
mMaxTextSize = getTextSize();
}
public void setAutoSize(boolean autoSize) {
this.autoSize = autoSize;
resetTextSize();
}
// Minimum text size for this text view
public static final float MIN_TEXT_SIZE = 50;
// Interface for resize notifications
public interface OnTextResizeListener {
public void onTextResize(TextView textView, float oldSize, float newSize);
}
// Our ellipse string
private static final String mEllipsis = "...";
// Registered resize listener
private OnTextResizeListener mTextResizeListener;
// Flag for text and/or size changes to force a resize
private boolean mNeedsResize = false;
// Text size that is set from code. This acts as a starting point for resizing
private float mTextSize;
// Temporary upper bounds on the starting text size
private float mMaxTextSize = 0;
// Lower bounds for text size
private float mMinTextSize = MIN_TEXT_SIZE;
// Text view line spacing multiplier
private float mSpacingMult = 1.0f;
// Text view additional line spacing
private float mSpacingAdd = 0.0f;
// Add ellipsis to text that overflows at the smallest text size
private boolean mAddEllipsis = true;
private int widthLimit;
private int heightLimit;
/**
* When text changes, set the force resize flag to true and reset the text size.
*/
@Override
protected void onTextChanged(final CharSequence text, final int start, final int before, final int after) {
mNeedsResize = true;
// Since this view may be reused, it is good to reset the text size
resetTextSize();
}
/**
* If the text view size changed, set the force resize flag to true
*/
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
if (w != oldw || h != oldh) {
mNeedsResize = true;
}
}
/**
* Register listener to receive resize notifications
*
* @param listener
*/
public void setOnResizeListener(OnTextResizeListener listener) {
mTextResizeListener = listener;
}
/**
* Override the set text size to update our internal reference values
*/
@Override
public void setTextSize(float size) {
super.setTextSize(size);
mTextSize = getTextSize();
}
/**
* Override the set text size to update our internal reference values
*/
@Override
public void setTextSize(int unit, float size) {
super.setTextSize(unit, size);
mTextSize = getTextSize();
}
/**
* Override the set line spacing to update our internal reference values
*/
@Override
public void setLineSpacing(float add, float mult) {
super.setLineSpacing(add, mult);
mSpacingMult = mult;
mSpacingAdd = add;
}
/**
* Set the upper text size limit and invalidate the view
*
* @param maxTextSize
*/
public void setMaxTextSize(float maxTextSize) {
mMaxTextSize = maxTextSize;
requestLayout();
invalidate();
}
/**
* Return upper text size limit
*
* @return
*/
public float getMaxTextSize() {
return mMaxTextSize;
}
/**
* Set the lower text size limit and invalidate the view
*
* @param minTextSize
*/
public void setMinTextSize(float minTextSize) {
mMinTextSize = minTextSize;
requestLayout();
invalidate();
}
/**
* Return lower text size limit
*
* @return
*/
public float getMinTextSize() {
return mMinTextSize;
}
/**
* Set flag to add ellipsis to text that overflows at the smallest text size
*
* @param addEllipsis
*/
public void setAddEllipsis(boolean addEllipsis) {
mAddEllipsis = addEllipsis;
}
/**
* Return flag to add ellipsis to text that overflows at the smallest text size
*
* @return
*/
public boolean getAddEllipsis() {
return mAddEllipsis;
}
/**
* Reset the text to the original size
*/
public void resetTextSize() {
if (autoSize) {
if (mTextSize > 0) {
super.setTextSize(TypedValue.COMPLEX_UNIT_PX, mMaxTextSize);
mTextSize = mMaxTextSize;
}
}
}
/**
* Resize text after measuring
*/
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (changed || mNeedsResize) {
widthLimit = (right - left) - getCompoundPaddingLeft() - getCompoundPaddingRight();
heightLimit = (bottom - top) - getCompoundPaddingBottom() - getCompoundPaddingTop();
resizeText(widthLimit, heightLimit);
}
super.onLayout(changed, left, top, right, bottom);
}
/**
* Resize the text size with specified width and height
*
* @param width
* @param height
*/
public void resizeText(int width, int height) {
if (autoSize) {
CharSequence text = getText();
int oneLineWidth = width;
int lineCount = getLineCount();
int minTextHeight = getTextHeight("oo", getPaint(), width, mMinTextSize);
int maxLineInHeight = height / minTextHeight;
lineCount = lineCount > maxLineInHeight ? maxLineInHeight : lineCount;
if (lineCount > 1) {
width = width * lineCount;
}
// Do not resize if the view does not have dimensions or there is no text
if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
return;
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while (textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
TextPaint paintCopy = new TextPaint(textPaint);
paintCopy.setTextSize(targetTextSize);
float textWidte = paintCopy.measureText(text, 0, text.length());
while (textWidte > width && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
paintCopy.setTextSize(targetTextSize);
textWidte = paintCopy.measureText(text, 0, text.length());
}
if (lineCount > 1) {
int textHeightforLine = getTextHeight(text, textPaint, oneLineWidth, targetTextSize);
while (textHeightforLine > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeightforLine = getTextHeight(text, textPaint, oneLineWidth, targetTextSize);
}
}
// If we had reached our minimum text size and still don't fit, append an ellipsis
if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
// modified: use a copy of TextPaint for measuring
TextPaint paint = new TextPaint(textPaint);
paint.setTextSize(mMinTextSize);
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, paint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
// Check that we have a least one line of rendered text
if (layout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line
int lastLine = layout.getLineForVertical(height) - 1;
// If the text would not even fit on a single line, clear it
if (lastLine < 0) {
setText("");
}
// Otherwise, trim to the previous line and add an ellipsis
else {
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
}
if (end != 0) {
setInputType(InputType.TYPE_CLASS_TEXT);
setSingleLine(true);
setLines(1);
setMaxLines(1);
setEllipsize(TextUtils.TruncateAt.END);
setSelected(true);
setText(text);
}
}
}
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if (mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}
}
// Set the text size of the text paint object and use a static layout to render text off screen before measuring
private int getTextHeight(CharSequence source, TextPaint paint, int width, float textSize) {
TextPaint paintCopy = new TextPaint(paint);
paintCopy.setTextSize(textSize);
StaticLayout layout = new StaticLayout(source, paintCopy, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, true);
return layout.getHeight();
}
公共类LMEditTextAutoSize扩展了EditText{
私有布尔值自动调整;
公共LMEditTextAutoSize(上下文上下文、属性集属性、int-defStyle){
超级(上下文、属性、定义样式);
mTextSize=getTextSize();
mmaxtsize=getTextSize();
}
公共LMEditTextAutoSize(上下文、属性集属性){
超级(上下文,attrs);
mTextSize=getTextSize();
mmaxtsize=getTextSize();
}
公共LMEditTextAutoSize(上下文){
超级(上下文);
mTextSize=getTextSize();
mmaxtsize=getTextSize();
}
public void setAutoSize(布尔值自动大小){
this.autoSize=自动调整大小;
resetTextSize();
}
//此文本视图的最小文本大小
公共静态最终浮动最小文本大小=50;
//调整大小通知的接口
公共接口OnTextResizeListener{
public void onTextResize(TextView TextView、float oldSize、float newSize);
}
//我们的椭圆弦
私有静态最终字符串mEllipsis=“…”;
//注册调整侦听器大小
私有OnTextResizeListener mTextResizeListener;
//文本和/或大小更改的标志,以强制调整大小
私有布尔值mNeedsResize=false;
//根据代码设置的文本大小。这是调整大小的起点
私有浮动mTextSize;
//起始文本大小的临时上限
私有浮点mMaxTextSize=0;
//文本大小的下限
私有浮点mMinTextSize=MIN\u TEXT\u SIZE;
//文本视图行距倍增器
私人浮动mSpacingMult=1.0f;
//文本视图附加行间距
私人浮动mSpacingAdd=0.0f;
//将省略号添加到以最小文本大小溢出的文本中
私有布尔mAddEllipsis=true;
私人有限公司;
私人内部高度限制;
/**
*文本更改时,请将“强制调整大小”标志设置为true并重置文本大小。
*/
@凌驾
受保护的void onTextChanged(最终字符序列文本、最终整数开始、最终整数之前、最终整数之后){
mNeedsResize=true;
//由于此视图可以重用,因此最好重置文本大小
resetTextSize();
}
/**
*如果文字视图大小已更改,请将“强制调整大小”标志设置为true
*/
@凌驾
已更改尺寸的受保护空心(整数w、整数h、整数oldw、整数oldh){
如果(w!=oldw | | h!=oldh){
mNeedsResize=true;
}
}
/**
*注册侦听器以接收调整大小通知
*
*@param侦听器
*/
public void setOnResizeListener(OnTextResizeListener侦听器){
mTextResizeListener=监听器;
}
/**
*覆盖设置的文本大小以更新内部参考值
*/
@凌驾
公共void setTextSize(浮动大小){
super.setTextSize(大小);
mTextSize=getTextSize();
}
/**
*覆盖设置的文本大小以更新内部参考值
*/
@凌驾
公共void setTextSize(整数单位,浮点大小){
super.setTextSize(单位,大小);
mTextSize=getTextSize();
}
/**
*覆盖设置的行距以更新内部参考值
*/
@凌驾
公共void设置行间距(浮动添加、浮动多个){
super.setlinespace(添加,多个);
mSpacingMult=mult;
mSpacingAdd=添加;
}
/**
*设置文本大小上限并使视图无效
*
*@param maxTextSize
*/
公共void setMaxTextSize(浮动maxTextSize){
mmaxtsize=maxTextSize;
requestLayout();
使无效();
}
/**
*返回文本大小上限
*
*@返回
*/
公共浮点getMaxTextSize(){
返回mMaxTextSize;
}
/**
*设置较低的文本大小限制并使视图无效
*
*@param minTextSize
*/
公共void setMinTextSize(浮点minTextSize){
mMinTextSize=minTextSize;
requestLayout();
使无效();
}
/**
*返回较低的文本大小限制
*
*@返回
*/
公共浮点getMinTextSize(){
返回mMinTextSize;
}
/**
*设置标志以向溢出的最小文本大小的文本添加省略号
*
*@param addEllipsis
*/
public void setAddEllipsis(布尔addEllipsis){
mAddEllipsis=addEllipsis;
}
/**
*返回标志,用于向溢出的最小文本大小的文本添加省略号
*
*@返回
*/
公共布尔getAddEllipsis(){
回归疯癫;
}
/**
*将文本重置为原始大小
*/
public void resetTextSize(){
如果(自动调整大小){
如果(mTextSize>0){
super.setTextSize(TypedValue.COMPLEX\u UNIT\u PX,mmaxtsize);
mTextSize=mmaxtsize;
}
}
}
/**
*测量后调整文本大小
*/
@凌驾
仅限受保护的空心布局(布尔值已更改、整数左侧、整数顶部、整数右侧、整数底部){
如果(已更改| | mNeedsResize){
宽度限制=(右-左)-getCompoundPaddingLeft()-getCompoundPaddingRight();
高度限制=(底部-顶部)-getCompoundPaddingBottom()-getCompoundPaddingTop();
resizeText(宽度限制、高度限制);
}
超级。仅限布局(已更改、左、上、右、下);
}
/**
*使用指定的宽度和高度调整文本大小
*
*@参数宽度
*@param高度
*/
公共空白重设文字(整幅宽度、整幅高度){
如果(自动调整大小){
CharSequence text=getText();
int oneLineWidth=宽度;
int lineCount=getLineCount();
int minTextHeight=getTextHeight(“oo”,getPaint(),宽度,mMinTextSize);
int MAXLINHEIGH=高度/MINTEXTHEIGH;
lineCount=lineCount>maxLineInHeight?maxLineInHeight:lineCount;
如果(行数>1){
宽度=宽度*行数;
}
//如果视图没有尺寸标注或没有文字,请不要调整大小
if(text==null | | text.length()==0 | | height){
//使用静态布局绘制