Android警报对话框的自定义面板和按钮面板的高度为0

问题描述

我用来创建对话框的函数。使用大数组创建时，警告对话框custtomPanel和buttonPanel的高度均为0。我该如何解决问题，谢谢。

 private AlertDialog createDialog() {
    String[] alphabet = new String[]{"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","r","s","t","u","v","w","x","y","z"};
    //String[] alphabet = new String[]{"a","h"};
    final boolean[] selectedAlphabets = new boolean[alphabet.length];
    int tempPosition = 0;
    for (String tempItem : alphabet) {
        selectedAlphabets[tempPosition] = false;
        tempPosition++;
    }

    View view = getLayoutInflater().inflate(R.layout.dialog_message_view,null);
    final TextView warning_message_tv = (TextView) view.findViewById(R.id.dialog_message);
    warning_message_tv.setText("-");


    final AlertDialog.Builder builder = new AlertDialog.Builder(this)
            .setTitle("Alert Dialog")
            .setCancelable(false)
            .setView(view)
            .setPositiveButton("Save",new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog,int which) {
                            dialog.cancel();
                        }
                    }
            ).setMultiChoiceItems(alphabet,selectedAlphabets,new DialogInterface.OnMultiChoiceClickListener() {
                @Override
                public void onClick(DialogInterface dialog,int which,boolean isChecked) {
                    selectedAlphabets[which] = isChecked;

                    int trueCount = 0;
                    for (int i = 0; i < selectedAlphabets.length; i++) {
                        if (selectedAlphabets[i]) {
                            trueCount++;
                        }
                    }
                    if (trueCount > 0) {
                        warning_message_tv.setText("* "+ trueCount + " items is selected");
                    }else {
                        warning_message_tv.setText("-");
                    }
                }
            }).setCancelable(true);

    return builder.create();
}

因此，当我使用较短的数组时，按钮和自定义视图均可见，但是当我使用较长的数组时，我的正按钮和自定义视图高度均为0

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
   >

        <TextView
            android:id="@+id/dialog_message"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="5dp"
            android:textColor="#808080"
            android:minLines="2"
            android:gravity="center"
            android:text="* Lorem ipsum dolor sit amet,consectetur adipiscing elit."
            android:textSize="12sp" />


</LinearLayout>

解决方法

尝试此方法：

    String[] alphabet = new String[]{"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","r","s","t","u","v","w","x","y","z"};
            AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
            LinearLayout rootLayout = new LinearLayout(this);
            rootLayout.setOrientation(LinearLayout.VERTICAL);
            ScrollView scrollView = new ScrollView(MainActivity.this);
            LinearLayout layout = new LinearLayout(this);
            layout.setOrientation(LinearLayout.VERTICAL);
            layout.setPadding(50,50,0);
    
            for (int i = 0; i < alphabet.length; i++) {
                CheckBox checkBox = new CheckBox(this);
                checkBox.setText(alphabet[i]);
                checkBox.setTextColor(Color.parseColor("#ff0000"));
                checkBox.setTextSize(24);
                checkBox.setPadding(10,5,10,5);
            final int finalI = i;
            checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {
                    Log.i("Onclick",finalI +" ->"+isChecked);
                }
            });
                layout.addView(checkBox);
            }
            scrollView.addView(layout);
            rootLayout.addView(scrollView);
            alertDialog.setNegativeButton("Cancel",new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog,int which) {
    
                }
            });
            alertDialog.setPositiveButton("Ok",int which) {
                    
                }
            });
            alertDialog.setView(rootLayout);
            alertDialog.show();