如何解决有没有一种方法可以在浮动代码上实现此对话框?
几天以来,我一直试图在飞镖语言上复制此代码和布局(我的大脑快要筋疲力尽),以便与IOS设备一起使用(当然没有可用性结果)。这就是我要寻找的:
我尝试过使用带有列的窗口小部件的行,由我自己用原始代码实现,等等。 这是Android Studio中使用的代码:
MainActivity.java
import androidx.appcompat.app.AppCompatActivity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import android.widget.LinearLayout;
import android.widget.Switch;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private AlertDialog dialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayList<String> catNames = new ArrayList<>();
for (int i = 0; i < 15; i++)
catNames.add("Category " + i);
findViewById(R.id.button).setOnClickListener(v -> {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
final View view = View.inflate(this,R.layout.dialog,null);
LinearLayout leftSide = view.findViewById(R.id.leftCat);
LinearLayout rightSide = view.findViewById(R.id.rightCat);
Switch all = view.findViewById(R.id.all);
all.setVisibility(View.VISIBLE);
if (catNames.size() % 2 == 0) {
for (int i = 0; i < catNames.size() / 2; i++) {
CheckBox categoryCheckBox = new CheckBox(this);
categoryCheckBox.setText(catNames.get(i));
categoryCheckBox.setTag("checkBox" + i);
leftSide.addView(categoryCheckBox);
}
for (int i = catNames.size() / 2; i < catNames.size(); i++) {
CheckBox categoryCheckBox = new CheckBox(this);
categoryCheckBox.setText(catNames.get(i));
categoryCheckBox.setTag("checkBox" + i);
rightSide.addView(categoryCheckBox);
}
} else {
for (int i = 0; i < catNames.size() / 2 + 1; i++) {
CheckBox categoryCheckBox = new CheckBox(this);
categoryCheckBox.setText(catNames.get(i));
categoryCheckBox.setTag("checkBox" + i);
leftSide.addView(categoryCheckBox);
}
for (int i = catNames.size() / 2 + 1; i < catNames.size(); i++) {
CheckBox categoryCheckBox = new CheckBox(this);
categoryCheckBox.setText(catNames.get(i));
categoryCheckBox.setTag("checkBox" + i);
rightSide.addView(categoryCheckBox);
}
}
dialog.setView(view);
this.dialog = dialog.create();
this.dialog.show();
view.findViewById(R.id.select).setOnClickListener(v1 -> {
String nameCategories = "";
for (int i = 0; i <catNames.size(); i++) {
CheckBox categoryChecker = view.findViewWithTag("checkBox" + i);
if (categoryChecker.isChecked())
nameCategories = nameCategories.concat((i + 1) + ",");
}
System.out.println("Selected categories are: " + nameCategories);
this.dialog.dismiss();
});
view.findViewById(R.id.delete).setOnClickListener(v1 -> this.dialog.dismiss());
view.findViewById(R.id.cancel).setOnClickListener(v1 -> this.dialog.dismiss());
});
}
}
dialog.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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingTop="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false"
android:orientation="horizontal"
android:weightSum="2">
<LinearLayout
android:id="@+id/leftCat"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
</LinearLayout>
<LinearLayout
android:id="@+id/rightCat"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
<Switch
android:id="@+id/all"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10sp"
android:text="All"
android:visibility="gone"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<androidx.cardview.widget.CardView
android:layout_width="0sp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:layout_weight="1"
app:cardCornerRadius="10dp">
<Button
android:id="@+id/delete"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:height="25dp"
android:background="@color/colorPrimary"
android:ellipsize="end"
android:text="Delete"
android:textColor="@android:color/white" />
</androidx.cardview.widget.CardView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false"
android:gravity="bottom"
android:orientation="horizontal"
android:weightSum="2">
<androidx.cardview.widget.CardView
android:layout_width="0sp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:layout_weight="1"
app:cardCornerRadius="10dp">
<Button
android:id="@+id/select"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:height="25dp"
android:background="@color/colorPrimary"
android:ellipsize="end"
android:text="Select"
android:textColor="@android:color/white" />
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:layout_width="0sp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:layout_weight="1"
app:cardCornerRadius="10dp">
<Button
android:id="@+id/cancel"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:height="25dp"
android:background="@color/colorPrimary"
android:ellipsize="end"
android:text="Cancel"
android:textColor="@android:color/white" />
</androidx.cardview.widget.CardView>
</LinearLayout>
</LinearLayout>
无论如何,这是我当前的Dart代码(假设变量 类别 与上述相同):
Future<String> _showMyDialog() async {
return showDialog<String>(
context: context,barrierDismissible: true,// user must tap button!
builder: (BuildContext context) {
return AlertDialog(
content: Column(
children: [
Row(
children: [
getTextWidgets(categories),getTextWidgets2(categories),],),Container(),Row(
children: [
Expanded(
child: Container(),Expanded(
child: Container(),);
},);
}
Widget getTextWidgets(List<String> strings) {
List<Widget> list = new List<Widget>();
for (var i = 0; i < strings.length / 2; i++) {
list.add(Row(
mainAxisSize: MainAxisSize.min,children: [
Checkbox(
key: Key(i.toString()),value: false,onChanged: (value) {},Text(strings[i],style: TextStyle(fontSize: 10.0,textAlign: TextAlign.justify,)
],));
}
return new Column(children: list,crossAxisAlignment: CrossAxisAlignment.start,);
}
Widget getTextWidgets2(List<String> strings) {
List<Widget> list = new List<Widget>();
for (var i = 0; i < strings.length; i++) {
list.add(Row(
children: [
Checkbox(
key: Key(i.toString()),Text(strings[i]),));
}
return new Column(children: list);
}
结果如下:
预先感谢。
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