如何在Android动态壁纸中更改对话框首选项的布局？
我正在尝试使用自定义对话框首选项，当膨胀时，每个选项都会调用一个Intent，并且膨胀的对话框具有自定义布局。我也试图在首选项本身上显示自定义xml布局。在选择之前首先在设置屏幕上显示的含义。我有一个自定义的xml布局，可以在左边显示文本，在右边显示4个图标图像。我希望每个图标都可以从那里或在对话框弹出窗口中选择。每个都有其意图。我知道这是可能的，因为我在动态壁纸中看到了它。我理解如何调用一个Intent并应用一个自定义布局，但是我尝试了我得到错误“无法膨胀对话框”。任何帮助将不胜感激。您可以在此处查看我的代码：TestLWP Settings
以下是我想要实现的目标的图像：
1 个答案:
答案 0 :(得分：1)
我已经弄清楚如何实现上述两个图像。我在这里为所有想要使用它的人提供代码。我还详细评论了代码，以解释发生了什么。
首先创建一个扩展DialogPreference的类并添加以下内容：
import android.app.Dialog;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.preference.DialogPreference;
import android.util.AttributeSet;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
public class SocialPref extends DialogPreference implements OnClickListener
{
public SocialPref(Context paramContext, AttributeSet paramChar)
{
super(paramContext, paramChar);
//Use setWidgetLayoutResource to display the setting how you
//want it in the settings screen
setWidgetLayoutResource(R.layout.pref_social);
//Set the title of the setting
setTitle(R.string.SocialTitle);
//Set the summary for the setting
setSummary(R.string.SocialSummary);
//Here you set the title for the Dialog
setDialogTitle(R.string.SocialTitle);
//Here you declare the layout for the Dialog
setDialogLayoutResource(R.layout.pref_social_dialog);
setNegativeButtonText(R.string.Cancel);
}
//Void a,b,c,and d are called when each icon is pressed
//on the setting or when each list item is selected within the dialog.
//allowing the user to select each social site from the setting or the dialog.
//each action includes an intent that launches the corresponding social site.
private void a(View paramView, int paramInt)
{
if (paramView != null)
{
View localView = paramView.findViewById(paramInt);
if (localView != null)
localView.setOnClickListener(new View.OnClickListener()
{
public final void onClick(View paramView)
{
this.gPlus();
}
private void gPlus()
{
Dialog localDialog = getDialog();
if (localDialog != null)
localDialog.dismiss();
Context localContext = getContext();
if (localContext != null)
{
Intent localIntent = new Intent();
localIntent.setAction("android.intent.action.VIEW");
//Important: put your G+ page where it says "gplus_account_here" or it won't work
localIntent.setData(Uri.parse("https://plus.google.com/gplus_account_here"));
localContext.startActivity(localIntent);
}
}
});
}
}
private void b(View paramView, int paramInt)
{
if (paramView != null)
{
View localView = paramView.findViewById(paramInt);
if (localView != null)
localView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
this.faceBook();
}
private void faceBook()
{
Dialog localDialog = getDialog();
if (localDialog != null)
localDialog.dismiss();
Context localContext = getContext();
if (localContext != null)
{
Intent localIntent1 = new Intent();
localIntent1.setAction("android.intent.action.VIEW");
//Important: put your FaceBook id and page in their respective locations
//or it won't work.
localIntent1.setData(Uri.parse("fb://profile/profile_id"));
Intent localIntent2 = ac.a(localContext, localIntent1, false);
if (localIntent2 == null)
{
localIntent2 = new Intent();
localIntent2.setAction("android.intent.action.VIEW");
localIntent2.setData(Uri.parse("https://facebook.com/profile_page"));
}
localContext.startActivity(localIntent2);
}
}
});
}
}
private void c(View paramView, int paramInt)
{
if (paramView != null)
{
View localView = paramView.findViewById(paramInt);
if (localView != null)
localView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v) {
this.twitter();
}
private void twitter()
{
Dialog localDialog = getDialog();
if (localDialog != null)
localDialog.dismiss();
Context localContext = getContext();
if (localContext != null)
{
Intent localIntent1 = new Intent();
localIntent1.setAction("android.intent.action.VIEW");
//Important: put your Twitter screen name where it says
//"screen_name_here" or it won't work
localIntent1.setData(Uri.parse("twitter://user?screen_name=screen_name_here"));
Intent localIntent2 = ac.a(localContext, localIntent1, false);
if (localIntent2 == null)
{
localIntent2 = new Intent();
localIntent2.setAction("android.intent.action.VIEW");
localIntent2.setData(Uri.parse("https://twitter.com/intent/user?screen_name=screen_name_here"));
}
localContext.startActivity(localIntent2);
}
}
});
}
}
private void d(View paramView, int paramInt)
{
if (paramView != null)
{
View localView = paramView.findViewById(paramInt);
if (localView != null)
localView.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View paramView) {
this.youTube();
}
private void youTube()
{
Dialog localDialog = getDialog();
if (localDialog != null)
localDialog.dismiss();
Context localContext = getContext();
if (localContext != null)
{
Intent localIntent = new Intent();
localIntent.setAction("android.intent.action.VIEW");
//Important: Put your YouTube channel name where it
//says "username_here" or it won't work
localIntent.setData(Uri.parse("http://www.youtube.com/user/username_here"));
localContext.startActivity(localIntent);
}
}
});
}
}
//This instantiates the view for the dialog
//and allows each icon to be clickable
protected final View onCreateDialogView()
{
View localView = super.onCreateDialogView();
//For example: when a(localView, d.tv_social_gplus); is
//called, public void a(); is started taking the user
//to the related social site or app
a(localView, d.tv_social_gplus);
b(localView, d.tv_social_facebook);
c(localView, d.tv_social_twitter);
d(localView, d.tv_social_ytube);
return localView;
}
//This instantiates the view for the setting within the setting
//screen and allows each icon to be clicked, invoking
//the corresponding action.
protected final View onCreateView(ViewGroup paramViewGroup)
{
View localView = super.onCreateView(paramViewGroup);
a(localView, d.iv_social_gplus);
b(localView, d.iv_social_facebook);
c(localView, d.iv_social_twitter);
d(localView, d.iv_social_ytube);
return localView;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
然后创建一个名为“d”的空类来存储整数：
public final class d
{
public static final int iv_social_facebook = R.id.iv_social_facebook;
public static final int iv_social_gplus = R.id.iv_social_gplus;
public static final int iv_social_twitter = R.id.iv_social_twitter;
public static final int iv_social_ytube = R.id.iv_social_ytube;
public static final int tv_social_facebook = R.id.tv_social_facebook;
public static final int tv_social_gplus = R.id.tv_social_gplus;
public static final int tv_social_twitter = R.id.tv_social_twitter;
public static final int tv_social_ytube = R.id.tv_social_ytube;
}
这是设置的xml，将其命名为“pref_social”：
<LinearLayout
android:gravity="center"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<ImageView
android:layout_gravity="center"
android:id="@+id/iv_social_ytube"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/value_margin_half"
android:src="@drawable/selector_ytube" />
<ImageView
android:layout_gravity="center"
android:id="@+id/iv_social_gplus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/value_margin_half"
android:src="@drawable/selector_gplus" />
<ImageView
android:layout_gravity="center"
android:id="@+id/iv_social_facebook"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/value_margin_half"
android:src="@drawable/selector_fb" />
<ImageView
android:layout_gravity="center"
android:id="@+id/iv_social_twitter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/value_margin_half"
android:src="@drawable/selector_twitter" />
</LinearLayout>
此xml是Dialog的布局，将其命名为“pref_social_dialog.xml”：
<LinearLayout android:gravity="left" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/value_margin_half"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView android:gravity="left|center" android:id="@+id/tv_social_ytube" android:clickable="true" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/value_margin_half" android:text="@string/Social_YouTube" android:drawableLeft="@drawable/selector_ytube" android:drawablePadding="@dimen/value_margin" />
<View android:background="?android:listDivider" android:layout_width="fill_parent" android:layout_height="1.0dip" />
<TextView android:gravity="left|center" android:id="@+id/tv_social_gplus" android:clickable="true" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/value_margin_half" android:text="@string/Social_GooglePlus" android:drawableLeft="@drawable/selector_gplus" android:drawablePadding="@dimen/value_margin" />
<View android:background="?android:listDivider" android:layout_width="fill_parent" android:layout_height="1.0dip" />
<TextView android:gravity="left|center" android:id="@+id/tv_social_facebook" android:clickable="true" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/value_margin_half" android:text="@string/Social_Facebook" android:drawableLeft="@drawable/selector_fb" android:drawablePadding="@dimen/value_margin" />
<View android:background="?android:listDivider" android:layout_width="fill_parent" android:layout_height="1.0dip" />
<TextView android:gravity="left|center" android:id="@+id/tv_social_twitter" android:clickable="true" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_margin="@dimen/value_margin_half" android:text="@string/Social_Twitter" android:drawableLeft="@drawable/selector_twitter" android:drawablePadding="@dimen/value_margin" />
<View android:background="?android:listDivider" android:layout_width="fill_parent" android:layout_height="1.0dip" />
</LinearLayout>
为drawable文件夹中的图标创建一个xml文件。这将在选择时更改图标。称之为“selector_fb.xml”为YouTube，Twitter和GPlus创建相同的内容：“selector_ytube.xml”，“selector_twitter.xml”，“selector_gplus.xml”
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_pressed="false" android:drawable="@drawable/fb" />
<item android:state_pressed="true" android:drawable="@drawable/fb_pressed" />
</selector>
您必须使用自己的图片。只需确保所选的一个是灰度，并且所有图像的大小都适合每种尺寸的设备。希望这有助于其他人。
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