添加一个按钮到prefrenceScreen：安卓 [英] Add a Button into PrefrenceScreen : Android

问题描述

你好我想添加一个按钮到prefrencescreen，我得到了成功进入一个按钮添加到prefrence，但我无法得到onclick事件。我重视prefence屏幕我的codeA PIC

Hi i want to add a button into prefrencescreen, i got success into add a button into the prefrence but i could not get onClick event. i have attached my code a pic of prefence screen

Setting.xml的

setting.xml

<PreferenceCategory android:title="Application Details">

    <Preference android:key="type" 
                android:title="Type"
                android:summary="" />

</PreferenceCategory>

<PreferenceCategory android:title="Notification Settings">

    <ListPreference android:key="sendNotificationType"
                    android:title="Status Notification For"
                    android:dialogTitle="Status Notification For" />

</PreferenceCategory>

settingdetail.xml

settingdetail.xml

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_alignRight="@+id/textView2"
    android:layout_marginLeft="15dp"
    android:text="Type"
    android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/textView1"
    android:layout_marginLeft="15dp"
    android:layout_toLeftOf="@+id/setFromTimeBtn"
    android:text="Summary"
    android:textAppearance="?android:attr/textAppearanceSmall" />

<Button
    android:id="@+id/buyItNowBtn"
    android:layout_width="80dp"
    android:layout_height="30dp"
    android:layout_alignParentRight="true"
    android:layout_marginRight="15dp"
    android:layout_centerVertical="true"
    android:background="@drawable/button"
    android:text="@string/buyItNowBtnTxt"
    android:textColor="@color/white" />

和prefenceActivity类的onCreate方法

and the onCreate Method of prefenceActivity Class

protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    addPreferencesFromResource(R.layout.setting);
    setContentView(R.layout.settingview);

    Preference typePref = (Preference) findPreference("type");
    typePref.setLayoutResource(R.layout.settingdetail);
typePref.setSelectable(true);

    Button btn = (Button) findViewById(R.id.buyItNowBtn);
    btn.setOnClickListener(new OnClickListener() {

    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        Log.e(TAG,"TEST");
        Toast.makeText(Setting.this, "TEST", Toast.LENGTH_SHORT).show();
    }
});

}

截图

推荐答案

这线程是过时的，但由于没有解决办法呢，这是我如何成功的：

This thread is stale, but since there is no solution yet, here is how I succeeded:

1。设置按钮，点击监听器

有两种方法来设置点击监听器的按钮，以编程方式或通过XML。

There are two ways to set the click listener for a button, either programmatically or via XML.

编程方式：的在您的自定义preference，覆盖 onBindView 并附加监听器有：

Programmatically: In your custom preference, override onBindView and attach the listener there:

@Override
protected void onBindView(View view) {
    View button = view.findViewById(R.id.myButton);
    button.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Log.d(LOG_TAG, "button click listener works!");
        }
    });
    super.onBindView(view);
}

通过XML：的添加安卓的onClick =yourMethodName到按钮的布局定义元素（这是你的preference布局的一部分，见下文），并在实施该方法的 preferenceActivity 如下所述：< A HREF =htt​​p://developer.android.com/guide/topics/ui/controls/button.html#HandlingEvents相对=nofollow>响应点击活动

Via XML: Add android:onClick="yourMethodName" to the layout definition of the Button element (which is part of the layout for your preference, see below) and implement the method in your PreferenceActivityas described here: Responding to Click Events

2。固定在preferenceClickListener

现在的按钮，点击监听器应该工作，但preference的在preferenceClickListener 将不再工作。为了解决这个问题，添加

Now the button click listener should work, but the Preference's OnPreferenceClickListener will not work anymore. In order to fix this, add

android:descendantFocusability="blocksDescendants"

在你的preference布局文件顶部的元素：

to the top element in the layout file for your preference:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="?android:attr/listPreferredItemHeight"
    android:gravity="center_vertical"
    android:paddingEnd="?android:attr/scrollbarSize"
    android:background="?android:attr/selectableItemBackground"
    android:descendantFocusability="blocksDescendants">

    <ImageView
        android:id="@android:id/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        />

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dip"
        android:layout_marginEnd="6dip"
        android:layout_marginTop="6dip"
        android:layout_marginBottom="6dip"
        android:layout_weight="1">

        <TextView android:id="@android:id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:singleLine="true"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:ellipsize="marquee"
            android:fadingEdge="horizontal" />

        <TextView android:id="@android:id/summary"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@android:id/title"
            android:layout_alignStart="@android:id/title"
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:textColor="?android:attr/textColorSecondary"
            android:maxLines="4" />

        <Button android:id="@+id/myButton"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true" />

    </RelativeLayout>

    <!-- Preference should place its actual preference widget here. -->
    <LinearLayout android:id="@android:id/widget_frame"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:gravity="center_vertical"
        android:orientation="vertical" />
</LinearLayout>

（否机器人：的onClick =yourMethodName这里我选择了以编程方式做到这一点）

(No android:onClick="yourMethodName" here as I chose to do it programmatically.)

3。安装布局

最后，你需要这样的布局设置为您的preference XML文件： 添加机器人：布局=@布局/ myLayoutName或可选择地通过 setLayoutResource 将其设置为你构建preference在 preferenceFragment 。

Finally you need to set this layout to your preference XML file: Add android:layout="@layout/myLayoutName" or alternatively set it via setLayoutResource as you construct the preference in your PreferenceFragment.

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