Android 如何将按钮添加到 PreferenceScreen

How to add a button to PreferenceScreen

提问by vlaku

Is there any way to add a button to the bottom of preferences screen and make them work correct when scrolling?

有什么方法可以在首选项屏幕底部添加一个按钮并使其在滚动时正常工作？

回答by Max

There is another solution for customizing the appearance of the preferences.

还有另一种自定义首选项外观的解决方案。

Design a normal XML layout with buttons or whatever you want to add to the standard preferences. Include a ListViewin your layout and give it the ID @android:id/list.

使用按钮或您想要添加到标准首选项的任何内容设计一个普通的 XML 布局。ListView在您的布局中包含 a并为其指定 ID @android:id/list。

Let's say we call the layout file res/layout/main.xml. It could look something like this:

假设我们调用布局文件res/layout/main.xml。它可能看起来像这样：

<?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="match_parent"
              android:orientation="vertical">
    <Button android:text="This is a button on top of all preferences."
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    <ListView android:id="@android:id/list"
              android:layout_width="match_parent"
              android:layout_height="wrap_content" />
</LinearLayout>

In your PreferenceActivity, add these two lines to your onCreate:

在您的 中PreferenceActivity，将这两行添加到您的onCreate：

addPreferencesFromResource(R.xml.preferences);
setContentView(R.layout.main);

The ListViewin your layout will then be replaced by the preferences defined the usual way in res/xml/preferences.xml.

然后ListView，您的布局中的 将被 中以通常方式定义的首选项替换res/xml/preferences.xml。

回答by jpihl

I know this is a bit late, but I just found a solution i like better than Max's praised solution.

我知道这有点晚了，但我刚刚找到了一个我喜欢的解决方案，而不是 Max 称赞的解决方案。

You can simply add a footer (or if you like the button to be on top, a header) to the PreferenceActivity's ListView like so:

您可以简单地向 PreferenceActivity 的 ListView 添加页脚（或者，如果您希望按钮位于顶部，则可以添加页眉），如下所示：

public class MyActivity extends PreferenceActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.preferences);
        ListView v = getListView();
        v.addFooterView(new Button(this));
    }
}

I hope this helps someone.

我希望这可以帮助别人。

回答by Ronnie

This example below will render a button at the bottom of the page (in case anybody is still interested).

下面的这个例子将在页面底部呈现一个按钮（以防有人仍然感兴趣）。

In case of a LinearLayout you could also apply weights; this is needed because the Listview is set to *fill_parent*. I usually do this by adding *android:layout_weight* 's:

在 LinearLayout 的情况下，您还可以应用权重；这是必需的，因为 Listview 设置为 *fill_parent*。我通常通过添加 *android:layout_weight* 来做到这一点：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
              android:orientation="vertical">
    <ListView android:id="@android:id/list"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent" android:layout_weight="10"/>
    <Button android:text="This is a button on top of all preferences."
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:layout_weight="1"/>
</LinearLayout>

The explanation below isn't propbably 100% but it will help you understand...

下面的解释可能不是 100%，但它会帮助你理解......

+-- View Port (linear layout)
| +-- List View (this is where the preferences will go)
| |
| |
| +--
+--
  +--
  | Button (which was pushed out of view by the fillparent of ListView
  +--

You could also say, because the Button has no weight; the button is rendered at 0dp height.

你也可以说，因为 Button 没有重量；按钮以 0dp 高度呈现。

Now with the layout_weigths added it will lett the button render inview

现在添加 layout_weigths 它将让按钮呈现 inview

+-- View Port (linear layout)
| +-- List View (this is where the preferences will go)
| |
| |
| +--
| +--
| | Button (which was pushed out of view by the fillparent of ListView
| +--
+--

回答by vlaku

Actually, there is a solution. Here is a code, i hope, this will be useful for anyone. It looks like 3 options and 2 buttons in the bottom of the screen, independent of screen resolution (was targeted to 240 as lowest)

实际上，有一个解决方案。这是一个代码，我希望，这对任何人都有用。它看起来像屏幕底部的 3 个选项和 2 个按钮，与屏幕分辨率无关（最低目标为 240）

package com.myapplication.gui;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.view.Display;
import android.view.Gravity;
import android.view.WindowManager;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ScrollView;
import com.myproject.general.HeightListView;

import com.myapplication.R;

public class FilterActivity extends PreferenceActivity {

    private LinearLayout rootView; 
    private LinearLayout buttonView; 
    private Button buttonDone;
    private Button buttonRevert;
    private ListView preferenceView; 
    private LinearLayout gradientView;
    private ScrollView scrollRoot;

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 

        Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay(); 
        int height = display.getHeight();
        int width = height > 240 ? display.getWidth() : display.getWidth() - 4;

        scrollRoot = new ScrollView(this);
        scrollRoot.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

        rootView = new LinearLayout(this); 
        rootView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); 
        rootView.setOrientation(LinearLayout.VERTICAL);

        buttonView = new LinearLayout(this); 
        buttonView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
        buttonView.setOrientation(LinearLayout.HORIZONTAL);
        buttonView.setGravity(Gravity.BOTTOM);

        gradientView = new LinearLayout(this);
        gradientView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        gradientView.setOrientation(LinearLayout.HORIZONTAL);
        gradientView.setBackgroundResource(R.drawable.gradient);
        gradientView.setPadding(0, 5, 0, 0);
        gradientView.setBackgroundResource(R.drawable.gradient);

        buttonDone = new Button(this); 
        buttonDone.setText(R.string.filterButton_Done); 
        buttonDone.setLayoutParams(new LayoutParams(width/2, LayoutParams.WRAP_CONTENT));
        gradientView.addView(buttonDone);

        buttonRevert = new Button(this); 
        buttonRevert.setText(R.string.filterButton_Revert);
        buttonRevert.setLayoutParams(new LayoutParams(width/2, LayoutParams.WRAP_CONTENT));
        gradientView.addView(buttonRevert);

        buttonView.addView(gradientView);

        preferenceView = new HeightListView(this); 
        preferenceView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); 
        preferenceView.setId(android.R.id.list); 

        PreferenceScreen screen = createPreferenceHierarchy(); 
        screen.bind(preferenceView); 
        preferenceView.setAdapter(screen.getRootAdapter()); 
        rootView.addView(preferenceView);
        rootView.addView(buttonView);

        if (height > 240) {
            this.setContentView(rootView);
        }
        else {
            scrollRoot.addView(rootView);
            this.setContentView(scrollRoot);
        }

        setPreferenceScreen(screen); 
    } 

    private PreferenceScreen createPreferenceHierarchy() {        
        PreferenceScreen root = getPreferenceManager().createPreferenceScreen(this);

        PreferenceScreen pref1 = getPreferenceManager().createPreferenceScreen(this);
        pref1.setKey("pref1");
        pref1.setTitle("Title");
        pref1.setSummary("Summary");
        root.addPreference(pref1); 

        PreferenceScreen pref2 = getPreferenceManager().createPreferenceScreen(this);
        pref2.setKey("pref2");
        pref2.setTitle("Title");
        pref2.setSummary("Summary");
        root.addPreference(pref2); 

        PreferenceScreen pref3 = getPreferenceManager().createPreferenceScreen(this);
        pref3.setKey("pref3");
        pref3.setTitle("Title");
        pref3.setSummary("Summary");
        root.addPreference(pref3); 

        return root; 
    } 
}

回答by Albert

You just need to use PreferenceFragment inside general Activity and add the button into activity layout.

您只需要在常规活动中使用 PreferenceFragment 并将按钮添加到活动布局中。

public class SettingActivity extends Activity {

    UserProfileViewModel userProfileViewModel = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_setting);
        getFragmentManager().beginTransaction()
                .replace(R.id.content, new SettingsFragment())
                .commit();

    }

    private class SettingsFragment extends PreferenceFragment {
        public SettingsFragment() {
        }

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            // Load the preferences from an XML resource
            addPreferencesFromResource(R.xml.pref_main);

        }
    }
}

SettingActivity.java

设置Activity.java

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

    <FrameLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/buttonSave"/>

    <Button
        android:id="@+id/buttonSave"
        android:text="Save"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>

activity_setting

活动设置

回答by user507410

This would be what the code looks like in the activity at the ronny's example. My intent was to put an menu in the bottom side of the screen.

这将是 ronny 示例中活动中的代码的样子。我的意图是在屏幕底部放置一个菜单。

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.prefs);
    addPreferencesFromResource(R.xml.prefs);

   /* LayoutInflater CX = getLayoutInflater();
    CX.inflate(R.layout.main,null);*/
    // TODO Auto-generated method stub
}

回答by Mejonzhan

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="@dimens/listview_height" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:text="This is a button on top of all preferences." />
</RelativeLayout>

I reference @Ronnie, use RelativeLayout and set a height for layout_height of listview, and then set the button's layout_alignParentBottom = "true", It can render a button at the bottom of PreferenceScreen; then use the way of @Max. it works for my needs.

我参考@Ronnie，使用RelativeLayout，设置listview的layout_height的高度，然后设置按钮的layout_alignParentBottom = "true"，它可以在PreferenceScreen的底部渲染一个按钮；然后使用@Max的方式。它适合我的需要。

回答by redevill

It is also possible to add Action buttons to the action bar for an android standard approach.

也可以为 Android 标准方法向操作栏添加操作按钮。

public class PrefActivity extends PreferenceActivity{

  @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu items for use in the action bar
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.preference_header_menu, menu);
      return super.onCreateOptionsMenu(menu);
  }

}


    <?xml version="1.0" encoding="utf-8"?>
       <menu xmlns:android="http://schemas.android.com/apk/res/android">
       <item android:id="@+id/action_add"
           android:icon="@drawable/ic_menu_add_dark"
           android:title="@string/menu_action_add_title"
           android:showAsAction="always"  />

   </menu>

回答by Ankit Singh

Custom view in Preference Activitythis will help to add custom view in PreferenceActivity in Android.

PreferenceActivity 中的自定义视图这将有助于在 Android 中的 PreferenceActivity 中添加自定义视图。

Create main.xml, the only necessary view is a ListView, with id: android:id="@android:id/list".

创建 main.xml，唯一需要的视图是一个 ListView，id: android:id="@android:id/list"。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:layout_width="fill_parent"
        android:layout_height="fill_parent" android:weightSum="1">
        <ListView 
            android:id="@android:id/list" 
            android:layout_weight="1"
            android:layout_width="fill_parent"
                android:layout_height="0dp">
        </ListView>
        <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

Create CustomPreferenceActivity.java

创建 CustomPreferenceActivity.java

public class CustomPreferenceActivity extends PreferenceActivity {
        @Override
        protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);
                addPreferencesFromResource(R.xml.settings);

                //setup any other views that you have
                TextView textView = (TextView) findViewById(R.id.textView);
textView.setText("View Added");
        }
}

回答by ppareit

The following is a simple solution to add a clickable button to your preference screen. This is made easy because the preferences already reserve the space in the android:widgetLayout and the button can pass clicks with android:onClick.

以下是向首选项屏幕添加可点击按钮的简单解决方案。这很容易，因为首选项已经在 android:widgetLayout 中保留了空间，并且按钮可以通过 android:onClick 传递点击。

First create a button.xml with the content

首先创建一个带有内容的 button.xml

<?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="match_parent">
<Button
    android:text="BUTTON"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/button"
    android:onClick="onButtonClick"/>
</LinearLayout>

Now in your preferences.xml, add the preference

现在在您的首选项.xml 中，添加首选项

<Preference
    android:key="button"
    android:title="Title"
    android:summary="Summary"
    android:widgetLayout="@layout/button" />

Your PreferenceActivity now only has to contain a onButtonClick member

您的 PreferenceActivity 现在只需要包含一个 onButtonClick 成员

public class MainActivity extends PreferenceActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    addPreferencesFromResource(R.xml.main_preferences);


}

public void onButtonClick(View v) {
    Log.d("Button", "Yeah, button was clicked");
}
}