我有一個帶有一些預(yù)裝文本的 EditText。創(chuàng)建EditText時，我想選擇所有文本和文本開頭的定位。但selectAll()總是轉(zhuǎn)移scrollPosition到最后。EditText edt;
edt.requestFocus();
edt.selectAll();
edt.scrollTo(0,0); //not scrolling
1 回答
牧羊人nacy
TA貢獻1862條經(jīng)驗 獲得超7個贊
參考這個例子：
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top"
android:hint="Enter name"
android:inputType="textCapSentences|textNoSuggestions|textMultiLine" />
<EditText
android:id="@+id/etEmail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="top"
android:hint="Description"
android:inputType="textCapSentences|textNoSuggestions|textMultiLine"
android:maxLines="6"
android:minLines="3" />
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:onClick="Clickhandle"
android:text="Click" />
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
EditText editText;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText=findViewById(R.id.etEmail);
// editText.setSelectAllOnFocus(true); --> Select all text inside EditText when it gets focus
}
public void Clickhandle(View view) {
editText.requestFocus();
editText.selectAll();
editText.post(new Runnable() {
public void run() {
editText.scrollTo(0, 0);
}
});
}
}
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