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自定义的TextView，使部分内容拥有点击事件，并在点击内容上方出现对应的词义等信息
直接看效果图：
上面图中是一个TextView，注册部分内容(KeyWord)是其拥有点击事件，并通过计算KeyWord的坐标，显示KeyWord的想要的一些信息
/**
* 一个TextView中包含一个可以点击的KeyWord(关键词),并通过点击关键词，在对应关键词位置正上方展示关键词对应的解释等逻辑
* @author DuGuang
*
*/
public class MainActivity extends Activity {
private KeyWordTextView mTvKeyWord;
private ShowHideView mShowHideView;
private DotView mDotView;
private int mStatusBarHeight; // 手机状态栏高度
private int mTitleBarHeight; //手机标题栏的高度
private RelativeLayout mLlMain;
private String mHide = "爱";
private String mStartStr; //关键词前面的字段
// private String mStartStr = null;
private String mKeyWord = "love"; //关键词
private String mEndStr ; //关键词后面的字段
// private String mEndStr = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
}
/**
* 初始化View
*/
private void initView() {
mTvKeyWord = (KeyWordTextView) findViewById(R.id.mTvKeyWord);
mLlMain = (RelativeLayout) findViewById(R.id.mLlMain);
mShowHideView = new ShowHideView(this);
mDotView = new DotView(this);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
mShowHideView.setLayoutParams(params);
mDotView.setLayoutParams(params);
mShowHideView.setVisibility(View.INVISIBLE);
mLlMain.addView(mShowHideView);
mLlMain.addView(mDotView);
}
/**
* 填充数据
*/
private void initData() {
mStartStr = "Whatever is worth doing is worth haha zhen de ke yi me, hao xi fan! Whatever is worth doing is worth haha zhen de ke yi me, hao xi fan! Whatever is worth doing is worth haha zhen de ke yi me, hao xi fan! Whatever is worth doing is worth haha zhen de ke yi me, hao xi fan! Whatever is worth doing is worth haha zhen de ke yi me, hao xi fan! Whatever is worth doing is worth haha zhen de ke yi me, hao xi fan! ";
mEndStr = " Whatever is worth doing is worth doing well.";
//这里开启子线程是为获取状态栏和标题栏的高度
mTvKeyWord.post(new Runnable() {
@Override
public void run() {
getBarHeight();
mTvKeyWord.setAllString(mStartStr, mKeyWord, mEndStr, mHide,
mStatusBarHeight, mTitleBarHeight, mShowHideView, mDotView);
}
});
}
/**
* 获取手机状态栏和标题栏的高度
*/
private void getBarHeight() {
Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
Window window = getWindow();
// 状态栏的高度
mStatusBarHeight = frame.top;
// 标题栏跟状态栏的总体高度
int contentViewTop = window.findViewById(Window.ID_ANDROID_CONTENT).getTop();
// 标题栏的高度：用上面的值减去状态栏的高度及为标题栏高度
mTitleBarHeight = contentViewTop - mStatusBarHeight;
Log.i("dg", mStatusBarHeight + "..." + contentViewTop + "..."
+ mTitleBarHeight);
}
}/**
* 一个TextView中包含一个可以点击的KeyWord(关键词),并通过点击关键词，在对应关键词位置正上方展示关键词对应的解释等逻辑
*
* @author DuGuang
* @date 2015.1.11
*
*/
public class KeyWordTextView extends TextView {
protected static final String TAG = KeyWordTextView.class.getSimpleName();
private Context mContext;
private String mHide; // 关键词的提示内容
private ShowHideView mShowHideView; //show关键词解释
private DotView mDotView; //画一个圆点，效验mShowHideView展示的位置是否正确
private String mStartStr, mKeyWord, mEndStr;
int mYStartTop;// 关键词第一个字符顶部y坐标
int mYStartBottom;// 关键词第一个字符底部y坐标
float mXStartLeft;// 关键词第一个字符左边x坐标
float mXStartRight;// 关键词第一个字符右边x坐标
int mYEndTop;// 关键词最后一个字符顶部y坐标
int mYEndBottom;// 关键词最后一个字符底部y坐标
float mXEndLeft;// 关键词最后一个字符左边x坐标
float mXEndRight;// 关键词最后一个字符右边x坐标
private Layout mLayout;
private int mStartPosition; // 关键词起始的位置
private int mEndPosition; // 关键词结束的位置
private int mStatusBarHeight; //手机状态栏高度
private int mTitleBarHeight; //手机标题栏的高度
private SpannableString mSpStr; //用于给KeyWord单独加颜色和下划线的类
@SuppressLint("NewApi")
public KeyWordTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.mContext = context;
}
public KeyWordTextView(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
}
public KeyWordTextView(Context context) {
super(context);
this.mContext = context;
}
/**
* 填充段落内容
*
* @param startStr
*
* @param keyWord
*
* @param endStr
*
*/
/**
* @param startStr
* @param keyWord
* @param endStr
* @param hide
* @param mDotView
* @param mTitleBarHeight
* @param mShowHideView
*/
/**
* @param startStr 关键词之前显示的内容，如果没有则传null
* @param keyWord 关键词，可以点击的词
* @param endStr 关键词之后显示的内容，如果没有则传null
* @param hide 展示关键词的解释字段
* @param statusBarHeight 状态栏的高度
* @param titleBarHeight 标题栏的高度
* @param showHideView 展示关键词的View
* @param dotView 画一个圆点，效验mShowHideView展示的位置是否正确
*/
public void setAllString(String startStr, String keyWord, String endStr, String hide, int statusBarHeight, int titleBarHeight,
ShowHideView showHideView, DotView dotView) {
this.mStartStr = startStr;
this.mKeyWord = keyWord;
this.mEndStr = endStr;
this.mHide = hide;
this.mStatusBarHeight = statusBarHeight;
this.mShowHideView = showHideView;
this.mTitleBarHeight = titleBarHeight;
this.mDotView = dotView;
setKeyWordClick();
initData();
getTextLayout();
}
/**
* 填充相关数据
*/
private void initData() {
// 计算关键词的起始位置
mStartPosition = StringUtil.isNotEmpty(mStartStr) ? mStartStr.length() + 1 : 1;
//计算关键词结束所在位置
mEndPosition = StringUtil.isNotEmpty(mEndStr) ?mStartPosition + mKeyWord.length()+1 : mStartPosition + mKeyWord.length() -1 ;
setText(mStartStr);
append(mSpStr);
append(StringUtil.isNotEmpty(mEndStr) ? mEndStr : "");
setMovementMethod(LinkMovementMethod.getInstance());// 相当于注册关键词的点击事件（开始响应点击事件）
}
/**
* 获取对应TextView的layout属性
*/
private void getTextLayout() {
// view变化监听器ViewTreeObserver介绍
ViewTreeObserver vto = getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
mLayout = getLayout();
Rect bound = new Rect();
int line = mLayout.getLineForOffset(mStartPosition);
mLayout.getLineBounds(line, bound);
mYStartTop = bound.top;
mYStartBottom = bound.bottom;
mXStartLeft = mLayout.getPrimaryHorizontal(mStartPosition);
mXStartRight = mLayout.getSecondaryHorizontal(mStartPosition);
}
});
}
/**
* 设置关键词的点击事件
*/
private void setKeyWordClick() {
mSpStr = new SpannableString(mKeyWord);
mSpStr.setSpan(new ClickableSpan() {
@Override
public void updateDrawState(TextPaint ds) {
super.updateDrawState(ds);
ds.setColor(Color.BLUE); //设置文字颜色
ds.setUnderlineText(true); // 设置下划线
}
@Override
public void onClick(View widget) {
Log.d("", "onTextClick........被点击了");
Log.i(TAG, "mYStartTop >>> " + mYStartTop);
Log.i(TAG, "mYStartBottom >>> " + mYStartBottom);
Log.i(TAG, "mXStartLeft >>> " + mXStartLeft);
Log.i(TAG, "mXStartRight >>> " + mXStartRight);
int[] location1 = new int[2];
// getLocationInWindow(location1);
getLocationOnScreen(location1);
Log.i(TAG, "location1[0] >>> " + location1[0]);
Log.i(TAG, "location1[1] >>> " + location1[1]);
getKeyWordEndInfo();
// RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
// params.leftMargin = 100;
// params.topMargin = 100;
// mdot.setLayoutParams(params);
RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
params2.leftMargin = (int)(mXStartLeft+(mXEndRight - mXStartLeft)/2)- mShowHideView.getWidth()/2;
params2.topMargin = (int)location1[1] - mStatusBarHeight - mTitleBarHeight + mYStartTop - mShowHideView.getHeight();
mShowHideView.setLayoutParams(params2);
mShowHideView.setPosition(mHide);
mDotView.setPosition((int)(mXStartLeft+(mXEndRight - mXStartLeft)/2), (int)location1[1] - mStatusBarHeight - mTitleBarHeight + mYStartTop);
}
}, 0, mKeyWord.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
}
/**
* 获取关键词最后一个字符的X,Y的相关信息
*/
public void getKeyWordEndInfo(){
mLayout = getLayout();
Rect bound = new Rect();
int line = mLayout.getLineForOffset(mEndPosition);
mLayout.getLineBounds(line, bound);
mYEndTop = bound.top;
mYEndBottom = bound.bottom;
mXEndLeft = mLayout.getPrimaryHorizontal(mEndPosition);
mXEndRight = mLayout.getSecondaryHorizontal(mEndPosition);
Log.i(TAG, "mYEndTop >>> " + mYEndTop);
Log.i(TAG, "mYEndBottom >>> " + mYEndBottom);
Log.i(TAG, "mXEndLeft >>> " + mXEndLeft);
Log.i(TAG, "mXEndRight >>> " + mXEndRight);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
}
}/**
* 点击KeyWord后，显示KeyWord的相关信息的View
* @author DuGuang
*
*/
public class ShowHideView extends LinearLayout{
private Context mContext;
private TextView mTvShowHide;
@SuppressLint("NewApi")
public ShowHideView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.mContext = context;
initView();
}
public ShowHideView(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
initView();
}
public ShowHideView(Context context) {
super(context);
this.mContext = context;
initView();
}
public void setPosition(String hide){
mTvShowHide.setText(hide);
setVisibility(View.VISIBLE);
}
/**
* 填充自定义的XML布局
*/
public void initView() {
View view = View.inflate(mContext, R.layout.item_popwin_start_hide,ShowHideView.this);
mTvShowHide = (TextView) view.findViewById(R.id.tv_paly_hide);
}
}
/**
* 画一个点，用来效验ShowHideView显示的位置是否正确
* @author DuGuang
*
*/
public class DotView extends View{
private static final String TAG = DotView.class.getSimpleName();
private Context mContext;
private float mX;
private float mY;
@SuppressLint("NewApi")
public DotView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.mContext = context;
}
public DotView(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
}
public DotView(Context context) {
super(context);
this.mContext = context;
}
public void setPosition(int x, int y){
mX = x;
mY = y;
invalidate();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
Paint paint = new Paint();
paint.setStyle(Style.FILL);
paint.setStrokeWidth(20);
paint.setColor(mContext.getResources().getColor(R.color.blue));
Log.i(TAG, "mX >>> "+mX);
Log.i(TAG, "mY >>> "+mY);
canvas.drawPoint(mX, mY, paint);
}
}
Demo下载地址：
Github地址：
自定义的TextView，使部分内容拥有点击事件，并在点击内容上方出现对应的词义等信息
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