android textview 获取内容高度,提前获取textview的高度

/**

* 提前获取textview行数

*/

public class TextViewLinesUtil {

public static int getTextViewLines(TextView textView, int textViewWidth) {

int width = textViewWidth - textView.getCompoundPaddingLeft() - textView.getCompoundPaddingRight();

StaticLayout staticLayout;

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

staticLayout = getStaticLayout23(textView, width);

} else {

staticLayout = getStaticLayout(textView, width);

}

int lines = staticLayout.getLineCount();

int maxLines = textView.getMaxLines();

if (maxLines > lines) {

return lines;

}

return maxLines;

}

/**

* sdk>=23

*/

@RequiresApi(api = Build.VERSION_CODES.M)

private static StaticLayout getStaticLayout23(TextView textView, int width) {

StaticLayout.Builder builder = StaticLayout.Builder.obtain(textView.getText(),

0, textView.getText().length(), textView.getPaint(), width)

.setAlignment(Layout.Alignment.ALIGN_NORMAL)

.setTextDirection(TextDirectionHeuristics.FIRSTSTRONG_LTR)

.setLineSpacing(textView.getLineSpacingExtra(), textView.getLineSpacingMultiplier())

.setIncludePad(textView.getIncludeFontPadding())

.setBreakStrategy(textView.getBreakStrategy())

.setHyphenationFrequency(textView.getHyphenationFrequency())

.setMaxLines(textView.getMaxLines() == -1 ? Integer.MAX_VALUE : textView.getMaxLines());

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

builder.setJustificationMode(textView.getJustificationMode());

}

if (textView.getEllipsize() != null && textView.getKeyListener() == null) {

builder.setEllipsize(textView.getEllipsize())

.setEllipsizedWidth(width);

}

return builder.build();

}

/**

* sdk<23

*/

private static StaticLayout getStaticLayout(TextView textView, int width) {

return new StaticLayout(textView.getText(),

0, textView.getText().length(),

textView.getPaint(), width, Layout.Alignment.ALIGN_NORMAL,

textView.getLineSpacingMultiplier(),

textView.getLineSpacingExtra(), textView.getIncludeFontPadding(), textView.getEllipsize(),

width);

}

}