如何在android中将透明背景设置为自定义对话框
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How to set Transparent Background as a Custom Dialog Box in android
提问by Bala
I need to make my custom dialog box as a transparent.
我需要将我的自定义对话框设为透明。
Sample Code :
示例代码：
Dialog dialog;
@Override
protected Dialog onCreateDialog(int id)
{
switch(id)
{
case 1:
AlertDialog.Builder builder = null;
Context mContext = this;
LayoutInflater inflater = ( LayoutInflater ) mContext.getSystemService( LAYOUT_INFLATER_SERVICE );
View layout = inflater.inflate( R.layout.about_page, ( ViewGroup ) findViewById( R.id.about_Root ) );
builder = new AlertDialog.Builder( mContext );
builder.setView( layout );
dialog = builder.create();
break;
}
return dialog;
}
How do set Transparent Dialog Box.
如何设置透明对话框。
My XML Code :
我的 XML 代码：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/about_Root"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/alert_page_border"
android:orientation="vertical" >
<TextView
android:id="@+id/about_Title"
android:layout_width="wrap_content"
android:layout_height="0dip"
android:gravity="center"
android:layout_weight="1"
android:textSize="25dip"
android:textColor="@android:color/white"
android:textStyle="bold|italic"
android:text="Welcome" />
</LinearLayout>
Code Alert_page_border.xml
代码 Alert_page_border.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#3b3b3b" />
<stroke
android:width="3dp"
android:color="#ffffff" />
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp" />
<corners
android:radius="2dp" />
</shape>
Sample Screenshot :
示例截图：
How do avoid this block color.
如何避免这种块颜色。
回答by ilomambo
Use dialog instead of AlertDialog
使用对话框而不是 AlertDialog
final Dialog dialog = new Dialog(this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
dialog.setContentView(R.layout.splash);
dialog.show();
回答by Plumillon Forge
If you are on API >= 11, you can try to set a theme to your Dialog like that :
如果您使用 API >= 11，您可以尝试为您的 Dialog 设置一个主题，如下所示：
new AlertDialog.Builder(mContext , android.R.style.Theme_Translucent_NoTitleBar_Fullscreen);
Or you can try to set the background transparent :
或者您可以尝试将背景设置为透明：
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(0));
回答by Midhu
Just create a style and apply that to your dialog
只需创建一个样式并将其应用于您的对话框
<style name="myDialogTheme" parent="@android:style/Theme.Dialog">
<item name="android:windowBackground">@color/Transparent</item>
<item name="android:windowIsFloating">false</item>
<item name="android:windowNoTitle">true</item>
</style>
Then, create your Dialog by using this theme;
然后，使用这个主题创建你的对话框；
Dialog myDialog = new Dialog(this,R.style.myDialogTheme) {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.about_page);
}
};
Hope this will help you to achieve your goal.
希望这会帮助你实现你的目标。
回答by Boris Strandjev
This question of yours describes exactly what my problem was. I tried every single solution I stumbled upon in this thread as well as in several more threads. Nothing worked. Finally I stumbled upon this threadand the corresponding answer.
你的这个问题准确地描述了我的问题。我尝试了我在这个线程以及更多线程中偶然发现的每一个解决方案。没有任何效果。最后我偶然发现了这个线程和相应的答案。
I had to create a custom dialog class. So I did and it worked. Actually the following styles were sufficient for me:
我必须创建一个自定义对话框类。所以我做了并且它奏效了。实际上，以下样式对我来说已经足够了：
colors.xml:
colors.xml：
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="transparent_black">#66000000</color>
</resources>
styles.xml:
styles.xml：
<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<style name="custom_dialog_theme" parent="@android:style/Theme.Translucent">
<item name="android:windowBackground">@color/transparent_black</item>
<item name="android:windowIsFloating">true</item>
</style>
</resources>
The code of the dialog class:
对话框类的代码：
import android.app.Dialog;
import android.content.Context;
import my.app.com.android.R;
public class CustomDialog extends Dialog {
public AddBookCustomDialog(final Context context) {
super(context, R.style.custom_dialog_theme);
this.setContentView(R.layout.add_book_dialog);
}
}
And how I use this dialog in the activity code:
以及我如何在活动代码中使用此对话框：
CustomDialog customDialog = new CustomDialog(this);
customDialog.show();
I don't know why I have to create a custom class in order for the theme to be taken into account. Now I have achieved what I wanted to do: transparent dialog. The next fight will be to position positive and negative buttons as long as I can no longer user the convenience methods of AlertDialog.Builder. Hopefully my code will prove of help to you.
我不知道为什么我必须创建一个自定义类才能考虑主题。现在我已经实现了我想要做的：透明对话框。接下来的战斗将是定位正负按钮，只要我不能再使用方便的方法AlertDialog.Builder。希望我的代码能证明对你有帮助。
Also notice the low value of alpha - maybe even try it with 00 so that you make sure whether your configuration works.
还要注意 alpha 的低值 - 甚至可以尝试使用 00 以确保您的配置是否有效。
回答by Varun Bhatia
Use dialog.getWindow().setBackgroundDrawable(null)to remove the default background.
使用dialog.getWindow().setBackgroundDrawable(null)删除默认背景。
Here is the doc for reference:
这是文档供参考：
/*** Set the background to a given Drawable, or remove the background. If the * background has padding, this View's padding is set to the background's * padding. However, when a background is removed, this View's padding isn't * touched. If setting the padding is desired, please use * {@link #setPadding(int, int, int, int)}. * * @param d The Drawable to use as the background, or null to remove the * background */
/*** Set the background to a given Drawable, or remove the background. If the * background has padding, this View's padding is set to the background's * padding. However, when a background is removed, this View's padding isn't * touched. If setting the padding is desired, please use * {@link #setPadding(int, int, int, int)}. * * @param d The Drawable to use as the background, or null to remove the * background */
回答by Deepesh
just remove
只需删除
from Alert_page_border.xml
来自 Alert_page_border.xml
回答by Law Gimenez
Try this,
尝试这个，
layout.setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
add the code above after this line.
在此行之后添加上面的代码。
View layout = inflater.inflate( R.layout.about_page, ( ViewGroup ) findViewById( R.id.about_Root ) );
回答by Krishna Suthar
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/a"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:background="#00000000">
<!-- Write your LinearLayout code here -->
</RelativeLayout>
Try this code.
试试这个代码。
