Android textView drawableXX图片大小
TextView自带的drawableLeft属性竟然不能设置图片大小，简直不能忍，啥也不说了，直接上代码
继承自TextView，直接在布局文件使用即可，在可以设置图片大小的前提下，进行了扩展，使其可以使用在更多的场景
例如：
以上场景就可以使用在多行文本的表现形式，然后使用spannableString 或者spannableStringBuilder 实现更多更复杂的表现形式
/**
* Drawable 监听回调接口
*
* Created by yinw on 2016-12-19.
*/
public class DrawableListener {
public interface DrawableRightListener{
void drawableRightListener(View view);
}
public interface DrawableLeftListener{
void drawableLeftListener(View view);
}
public interface DrawableTopListener{
void drawableTopListener(View view);
}
public interface DrawableBottomListener{
void drawableBottomListener(View view);
}
}
/**
* Created by yinw on 2016-12-07.
*/
public class DrawableTextView extends TextView {
private int leftDrawableWidth, leftDrawableHeight, rightDrawableWidth, rightDrawableHeight,
topDrawableWidth, topDrawableHeight, bottomDrawableWidth, bottomDrawableHeight;
private int leftWidth, rightWidth;//左右图片宽度
private boolean addTail = false;//是否对换行符的长字符串进行...替换
private final int DRAWABLE_LEFT = 0;
private final int DRAWABLE_TOP = 1;
private final int DRAWABLE_RIGHT = 2;
private final int DRAWABLE_BOTTOM = 3;
private DrawableListener.DrawableRightListener drawableRightListener;
private DrawableListener.DrawableLeftListener drawableLeftListener;
private DrawableListener.DrawableTopListener drawableTopListener;
private DrawableListener.DrawableBottomListener drawableBottomListener;
public DrawableTextView(Context context) {
this(context, null);
}
public DrawableTextView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public DrawableTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.DrawableTextView, defStyleAttr, 0);
leftDrawableHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_leftDrawableHeight,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
leftDrawableWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_leftDrawableWidth,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
rightDrawableHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_rightDrawableHeight,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
rightDrawableWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_rightDrawableWidth,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
topDrawableHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_topDrawableHeight,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
topDrawableWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_topDrawableWidth,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
bottomDrawableHeight = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_bottomDrawableHeight,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
bottomDrawableWidth = typedArray.getDimensionPixelSize(R.styleable.DrawableTextView_bottomDrawableWidth,
(int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, -1, getResources().getDisplayMetrics()));
addTail = typedArray.getBoolean(R.styleable.DrawableTextView_addTail, false);
typedArray.recycle();
Drawable[] drawables = getCompoundDrawables();
for (int i = 0; i < drawables.length; i++) {
setDrawableSize(drawables[i], i);
}
//放置图片
setCompoundDrawables(drawables[DRAWABLE_LEFT], drawables[DRAWABLE_TOP], drawables[DRAWABLE_RIGHT], drawables[DRAWABLE_BOTTOM]);
}
//设置drawableRight 图片的点击监听
public void setDrawableRightListener(DrawableListener.DrawableRightListener drawableRightListener) {
this.drawableRightListener = drawableRightListener;
}
public void setDrawableLeftListener(DrawableListener.DrawableLeftListener drawableLeftListener) {
this.drawableLeftListener = drawableLeftListener;
}
public void setDrawableTopListener(DrawableListener.DrawableTopListener drawableTopListener) {
this.drawableTopListener = drawableTopListener;
}
public void setDrawableBottomListener(DrawableListener.DrawableBottomListener drawableBottomListener) {
this.drawableBottomListener = drawableBottomListener;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_UP:
if (drawableRightListener != null) {
Drawable drawableRight = getCompoundDrawables()[DRAWABLE_RIGHT];
if (drawableRight != null && event.getRawX() >= (getRight() - drawableRight.getBounds().width())
&& event.getRawX() < getRight()) {
drawableRightListener.drawableRightListener(this);
return true;
}
}
if (drawableLeftListener != null) {
Drawable drawableLeft = getCompoundDrawables()[DRAWABLE_LEFT];
if (drawableLeft != null && event.getRawX() <= (getLeft() + drawableLeft.getBounds().width())
&& event.getRawX() > getLeft()) {
drawableLeftListener.drawableLeftListener(this);
return true;
}
}
if (drawableTopListener != null) {
Drawable drawableTop = getCompoundDrawables()[DRAWABLE_TOP];
if (drawableTop != null && event.getRawY() <= (getTop() + drawableTop.getBounds().height())
&& event.getRawY() > getTop()) {
drawableTopListener.drawableTopListener(this);
return true;
}
}
if (drawableBottomListener != null) {
Drawable drawableBottom = getCompoundDrawables()[DRAWABLE_BOTTOM];
if (drawableBottom != null && event.getRawY() >= (getBottom() - drawableBottom.getBounds().height())
&& event.getRawY() < getBottom()) {
drawableBottomListener.drawableBottomListener(this);
return true;
}
}
break;
}
return super.onTouchEvent(event);
}
//设置图片的高度和宽度
private void setDrawableSize(Drawable drawable, int index) {
if (drawable == null) {
return;
}
//左上右下
int width = 0, height = 0;
switch (index) {
case DRAWABLE_LEFT:
width = leftDrawableWidth;
height = leftDrawableHeight;
break;
case DRAWABLE_TOP:
width = topDrawableWidth;
height = topDrawableHeight;
break;
case DRAWABLE_RIGHT:
width = rightDrawableWidth;
height = rightDrawableHeight;
break;
case DRAWABLE_BOTTOM:
width = bottomDrawableWidth;
height = bottomDrawableHeight;
break;
}
//如果没有设置图片的高度和宽度具使用默认的图片高度和宽度
if (width < 0) {
width = drawable.getIntrinsicWidth();
}
if (height < 0) {
height = drawable.getIntrinsicHeight();
}
if (index == 0) {
leftWidth = width;
} else if (index == 2) {
rightWidth = width;
}
drawable.setBounds(0, 0, width, height);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
//是否对包含有换行符的文字，以换行符分割的句子，超过textView最大宽度的时候以“...”结尾
if (addTail) {
String text = getText().toString();
float textWidth = getWidth() - getPaddingRight() - getPaddingLeft();
if (leftWidth != 0) {
textWidth = textWidth - leftWidth - getCompoundDrawablePadding();
}
if (rightWidth != 0) {
textWidth = textWidth - rightWidth - getCompoundDrawablePadding();
}
setText(changeText(text, textWidth));
}
}
/**
* 以换行符\n来分离文本，每行超过最大长度的文本以...来替换 可以少写很多的textView
*
* @param text 文本内容
* @param textWidth 文本最大长度
* @return
*/
private String changeText(String text, float textWidth) {
String[] contents = text.split("\\n");
float contentWidth;
String content;
for (int j = 0; j < contents.length; j++) {
content = contents[j];
contentWidth = this.getPaint().measureText(content);
if (contentWidth > textWidth) {
String newContent;
float newContentWidth;
for (int i = content.length(); i >= 0; i--) {
newContent = content.substring(0, i);
newContentWidth = this.getPaint().measureText(newContent + "...");
if (newContentWidth <= textWidth) {
contents[j] = newContent.concat("...");
break;
}
}
}
}
StringBuilder stringBuilder = new StringBuilder();
for (int k=0;k程序员内功修炼手册 不定期分享程序员基础知识，大前端知识！想跟博主一块成长的快快关注吧！
