android中textview.getLineCount始终为0

Android中的TextView是常用的UI控件之一，用于显示文本内容。在某些情况下，我们可能会遇到一个问题，就是无论TextView中的文本有多长，调用getLineCount()方法始终返回0。那么，接下来我们就来探究一下这个问题的原因以及解决方法。

xml
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
            android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer mollis fermentum dolor vitae convallis. Sed ut fermentum risus. Vestibulum consequat faucibus velit, sit amet finibus tortor hendrerit vitae. Nam aliquam magna ex, in finibus ex dapibus vel. Nulla facilisi. Proin quam justo, auctor ac felis at, pretium suscipit mi. Sed nec faucibus mi. Aenean convallis justo vel elit condimentum, ut gravida mi vulputate. Sed ac ligula vitae leo dignissim fringilla. Sed placerat tempus nisl, sed finibus risus tempus a. Sed condimentum tincidunt nisi, vitae finibus mauris interdum ac. Donec sollicitudin, odio gravida cursus pellentesque, tellus dui blandit purus, a efficitur arcu felis vitae mauris. Sed sollicitudin nec leo vitae fermentum. Sed at tempus tellus, a hendrerit tellus. Nulla facilisi."
        android:padding="16dp" />

java
// MainActivity.java
public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TextView textView = findViewById(R.id.textView);
        textView.post(() -> {
            int lineCount = textView.getLineCount();
            Log.d("Line Count", "Line Count: " + lineCount);
        });
    }
}