TextView 获取行数，某一行的内容，某行的宽度

ViewTreeObserver vto = textView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

@Override
public void onGlobalLayout() {
ViewTreeObserver obs = textView.getViewTreeObserver();
obs.removeGlobalOnLayoutListener(this);
int lineCount = textview.getLineCount(); //行数

}
});

//或者
textview.setText(“Some text”);
textview.post(new Runnable() {
@Override
public void run() {
int lineCount = textview.getLineCount();//行数
}
});

Layout layout = edit.getLayout();
String text = edit.getText().toString();
int start = 0;
int end;
for (int i = 0; i < edit.getLineCount(); i++) {
end = layout.getLineEnd(i);

String line = text.substring(start, end); //指定行的内容
start = end;
float width = layout.getLineWidth(i); //指定行的宽度

Log.e("test", line + "," + width);
}