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@@ -0,0 +1,106 @@
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+package com.atmob.voiceai.widget;
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+
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+import android.content.Context;
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+import android.graphics.Paint;
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+import android.graphics.Rect;
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+import android.text.Layout;
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+import android.text.TextPaint;
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+import android.util.AttributeSet;
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+
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+import androidx.annotation.Nullable;
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+
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+public class NoSpaceTextView extends androidx.appcompat.widget.AppCompatTextView {
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+
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+ /**
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+ * 控制measure()方法 刷新测量
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+ */
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+ private boolean refreshMeasure = false;
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+
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+ public NoSpaceTextView(Context context) {
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+ super(context);
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+ }
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+
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+ public NoSpaceTextView(Context context, @Nullable AttributeSet attrs) {
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+ super(context, attrs);
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+ }
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+
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+ public NoSpaceTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
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+ super(context, attrs, defStyleAttr);
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+ }
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+
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+ @Override
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+ protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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+ super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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+
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+ removeSpace(widthMeasureSpec, heightMeasureSpec);
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+ }
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+
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+ @Override
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+ public void setText(CharSequence text, BufferType type) {
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+ super.setText(text, type);
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+ // 每次文本内容改变时，需要测量两次，确保计算的高度没有问题
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+ refreshMeasure = true;
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+ }
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+
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+ /**
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+ * 这里处理文本的上下留白问题
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+ */
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+ private void removeSpace(int widthspc, int heightspc) {
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+
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+ int paddingTop = 0;
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+ String[] linesText = getLinesText();
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+ TextPaint paint = getPaint();
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+ Rect rect = new Rect();
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+ String text = linesText[0];
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+ paint.getTextBounds(text, 0, text.length(), rect);
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+
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+ Paint.FontMetricsInt fontMetricsInt = new Paint.FontMetricsInt();
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+ paint.getFontMetricsInt(fontMetricsInt);
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+
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+ paddingTop = (fontMetricsInt.top - rect.top);
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+
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+ // 设置TextView向上的padding (小于0, 即把TextView文本内容向上移动)
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+ setPadding(getLeftPaddingOffset()
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+ , paddingTop + getTopPaddingOffset()
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+ , getRightPaddingOffset()
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+ , getBottomPaddingOffset());
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+
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+ String endText = linesText[linesText.length - 1];
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+ paint.getTextBounds(endText, 0, endText.length(), rect);
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+
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+ // 再减去最后一行文本的底部空白，得到的就是TextView内容上线贴边的的高度，到达消除文本上下留白的问题
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+ setMeasuredDimension(getMeasuredWidth()
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+ , getMeasuredHeight() - (fontMetricsInt.bottom - rect.bottom));
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+
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+ if (refreshMeasure) {
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+ refreshMeasure = false;
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+ measure(widthspc, heightspc);
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+ }
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+ }
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+
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+ /**
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+ * 获取每一行的文本内容
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+ */
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+ private String[] getLinesText() {
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+
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+ int start = 0;
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+ int end = 0;
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+
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+ String[] texts = new String[getLineCount()];
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+
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+ String text = getText().toString();
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+
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+ Layout layout = getLayout();
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+
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+ for (int i = 0; i < getLineCount(); i++) {
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+ end = layout.getLineEnd(i);
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+
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+ String line = text.substring(start, end); //指定行的内容
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+ start = end;
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+
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+ texts[i] = line;
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+ }
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+
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+ return texts;
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+ }
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+}
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