java - 具有自定义背景颜色的Android AlertDialog setMultiChoiceItems

Question

我得到了这个带有多项选择项选择的 alertDialog:

builder.setTitle(R.string.layer_options_title)
    .setMultiChoiceItems(availableOptions, selectedLayerOptions, new DialogInterface.OnMultiChoiceClickListener() {
        ...
    });

在哪里

availableOptions = getApplicationContext().getResources().getStringArray(R.array.layer_options);

来自

<string-array name="layer_options">
    <item>Should have green background</item>
    <item>Should have yellow background</item>
    <item>Should have orange background</item>
    <item>Should have blue background</item>
</string-array>

有什么办法可以让这些多选题有背景色吗？

Answer 1

是的，有办法。将您的复选框放在布局中并赋予布局背景颜色。这就是我能做到的:

AlertDialog.Builder alert = new AlertDialog.Builder(this);
        LinearLayout mainLayout       = new LinearLayout(this);
        mainLayout.setOrientation(LinearLayout.VERTICAL);

        LinearLayout layout1       = new LinearLayout(this);
        layout1.setOrientation(LinearLayout.HORIZONTAL);
        CheckBox cb1 = new CheckBox(getApplicationContext());
        cb1.setText("Easy");
        layout1.addView(cb1);
        layout1.setBackgroundColor(Color.BLUE);
        layout1.setMinimumHeight(50);

        LinearLayout layout2       = new LinearLayout(this);
        layout2.setOrientation(LinearLayout.HORIZONTAL);
        layout2.addView(new TextView(this));
        CheckBox cb2 = new CheckBox(getApplicationContext());
        cb2.setText("Normal");
        layout2.addView(cb2);
        layout2.setBackgroundColor(Color.CYAN);
        layout2.setMinimumHeight(50);

        LinearLayout layout3       = new LinearLayout(this);
        layout3.setOrientation(LinearLayout.HORIZONTAL);
        CheckBox cb3 = new CheckBox(getApplicationContext());
        cb3.setText("Hard");
        layout3.addView(cb3);
        layout3.setBackgroundColor(Color.GREEN);
        layout3.setMinimumHeight(50);

        mainLayout.addView(layout1);
        mainLayout.addView(layout2);
        mainLayout.addView(layout3);
        alert.setTitle("Custom alert demo");
        alert.setView(mainLayout);
        alert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.cancel();
            }
        });
        alert.setPositiveButton("Done", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(getBaseContext(), "done", Toast.LENGTH_SHORT).show();
            }
        });

        alert.show();

结果:

首先，我创建了一个主布局(垂直)，如您在代码中所见。然后，我为每个复选框创建了一个水平布局。在这种情况下，您可以使用元素(复选框、项目等)的颜色和字体。