我有一个TextView
,当以编程方式填充时,不能正确地换行。
这就是发生的事情:
| Hi I am an examp |
| le of a string t |
| hat is not break |
| ing correctly on |
| words |
我想要这个:
| Hi I am an |
| example of a |
| string that is |
| breaking |
| correctly on |
| words |
String mQuestion = "Hi I am an example of a string that is breaking correctly on words";
mTextView.setText(mQuestion);
<LinearLayout
android:id="@+id/questionContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/questionHeaderTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/header_bg"
android:paddingBottom="10dp"
android:paddingLeft="25dp"
android:paddingTop="10dp"
android:text="@string/category_hint"
android:textAppearance="?android:attr/textAppearanceLarge" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Space
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".05" />
<!-- THIS ONE WILL NOT WRAP !-->
<TextView
android:id="@+id/questionHolderTextView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight=".9"
android:layout_marginBottom="15dp"
android:layout_marginTop="15dp"
android:layout_marginLeft="15dp"
android:layout_marginRight="15dp"
android:text="@string/question_holder"
android:singleLine="false"
android:scrollHorizontally="false"
android:ellipsize="none"
android:textSize="20sp" />
<Space
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight=".05" />
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:layout_marginTop="5dp"
android:background="@color/black" />
</LinearLayout>
<LinearLayout
android:id="@+id/answerContainer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:visibility="visible" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="25dp"
android:gravity="center" >
<Button
android:id="@+id/nextButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="25dp"
android:text="@string/next" />
</LinearLayout>
答案 0 :(得分:8)
首先,您可以使用TextView.getPaint()
获取文本绘画,然后每次添加新单词(嗨,我,上午等)时,在绘画上调用measureText
。如果结果长度超过TextView的可用宽度,请在新单词前添加\n
。重置数据并重复步骤。
答案 1 :(得分:2)
我最终使用
private void initView() {
Paint paint = new Paint();
float width = paint.measureText(mQuestion);
int maxLength = 300; // put whatever length you need here
if (width > maxLength) {
List<String> arrayList = null;
String[] array = (mQuestion.split("\\s"));
arrayList = Arrays.asList(array);
int seventyPercent = (int) (Math.round(arrayList.size() * 0.70)); // play with this if needed
String linebreak = arrayList.get(seventyPercent) + "\n";
arrayList.set(seventyPercent, linebreak);
mQuestion = TextUtils.join(" ", arrayList);
mQuestion.replace(",", " ");
}
mQuestionHolderTextView.setText(mQuestion);
}
我测量字符串,将其转换为List,然后将其拆分为70%并创建一个新行。然后我将List转回String并删除逗号。只要该字不超过剩余线的30%,您就可以清楚地进行调整,否则进行相应的调整。
它既快又脏,但它对我有用。
答案 2 :(得分:1)
使用以下方法,您可以获取包装文本。
由于我没有设置android,所以我编写了一个Test类并从main调用了该方法。您需要传递textview宽度。我在这里过了14分。
public class Test{
public static void main(String[] args) {
String wrappedText=wrapText(14);
System.out.println(wrappedText);
}
public static String wrapText(int textviewWidth) {
String mQuestion = "Hi I am an example of a string that is breaking correctly on words";
String temp = "";
String sentence = "";
String[] array = mQuestion.split(" "); // split by space
for (String word : array) {
if ((temp.length() + word.length()) < textviewWidth) { // create a temp variable and check if length with new word exceeds textview width.
temp += " "+word;
} else {
sentence += temp+"\n"; // add new line character
temp = word;
}
}
return (sentence.replaceFirst(" ", "")+temp);
}
}
输出 -
Hi I am an
example of a
string that is
breaking
correctly on
words
答案 3 :(得分:0)
感谢suitianshi,以下是我的解决方案。
GoogleSignInAccount lastSignedInAccount= GoogleSignIn.getLastSignedInAccount(context);
if(lastSignedInAccount==null){
// user has already logged in, you can check user's email, name etc from lastSignedInAccount
String email = lastSignedInAccount.getEmail();
}else{
// user is not logged in with any account
}
它工作和清洁代码。
答案 4 :(得分:0)
android:breakStrategy="simple"
将此添加到您的Textview中。它对我有用!
答案 5 :(得分:-1)
Android 不支持 TextView。尝试使用
value.replaceAll("\s", " ");
或
htmlText.replace("\n","
").replace("\s", " ")