Question

android开发中如何将listpreference中的黑色背景设置成透明色?

Answer 1

如何设置PreferenceActivity/preferenceScreen的背景色

1、在value文件夹下新建一个systemset.xml文件，sytemset.xml内容
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="sys_set_preacitivity">
<item name="android:windowBackground">@drawable/background</item>
<item name="android:focusable">false</item>
<item name="android:textColor">#ff000000</item>
<item name="android:cacheColorHint">#ffffffff</item>
<item name="android:windowNoTitle">false</item> <!-- 用来设定是否显示标题 -->
</style>
</resources>
2、在AndroidManifest.xml调用
<activity android:name="SystemSetAcitivity" android:theme="@style/sys_set_preacitivity"></activity>
4、新建一个xml文件，在xml下新建一个system_set.xml，内容是
<?xml version="1.0" encoding="utf-8"?>
<preferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
android:title="@string/systemTitle" android:layout="@layout/system_set">

<preferenceCategory android:title="@string/soundTitle">
<CheckBoxPreference android:title="@string/muteTitle"
android:summary="@string/muteSum"></CheckBoxPreference>
<CheckBoxPreference android:title="@string/shockTitle"
android:summary="@string/shockSum"></CheckBoxPreference>
<CheckBoxPreference android:title="@string/soundTitle"
android:summary="@string/soundSum"></CheckBoxPreference>
</PreferenceCategory>

<preferenceCategory android:title="@string/soundTitle">
<CheckBoxPreference android:title="@string/muteTitle"
android:summary="@string/muteSum"></CheckBoxPreference>
<CheckBoxPreference android:title="@string/shockTitle"
android:summary="@string/shockSum"></CheckBoxPreference>
<CheckBoxPreference android:title="@string/soundTitle"
android:summary="@string/soundSum"></CheckBoxPreference>
</PreferenceCategory>

</PreferenceScreen>
4、在src下新建一个java文件
package com.android.perference.acitivity;

import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;

public class SystemSetAcitivity extends PreferenceActivity
{

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.system_set);
}

@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
Preference preference)
{
return super.onPreferenceTreeClick(preferenceScreen, preference);
}

}
5、运行程序出现拖动黑屏，一直困扰着我，不知道怎么解决，谁有好的办法

Answer 2

用适配器ArrayAdapter