Android settings transparent, translucent and other effects

There are about three ways to set the transparency effect
1, with the Android system transparent effect
Java code
Android:background= "@android: Color/transparent"
For example, the Set button
Java code
<button android:background= "@android: Color/transparent"

android:text= "@+id/button01"

Android:id= "@+id/button01"

Android:layout_width= "Wrap_content"

android:layout_height= "Wrap_content"

Android:textcolor= "#ffffff"/>
2. Use ARGB to control Java code
Translucent <button android:background= "#e0000000"/>
Transparent <button android:background= "#00000000"/> 3, set Alphajava code
View v = Findviewbyid (r.id.content);//Find the ID of the layout you want to set the transparent background
V.getbackground (). Setalpha (100);//0~255 Transparency Value
Android forms transparent, dark and so on settings tricks set Transparency (this is the transparency of the form itself, non-background)

1	WindowManager.LayoutParams lp=getWindow().getAttributes();

2	lp.alpha=0.3f;

3	getWindow().setAttributes(lp);

Alpha is between 0.0f and 1.0f. 1.0 completely opaque, 0.0f completely transparent


Set Dark degrees

1	WindowManager.LayoutParams lp=getWindow().getAttributes();

2	lp.dimAmount=0.5f;

3	getWindow().setAttributes(lp);

4	getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);

Dimamount between 0.0f and 1.0f, 0.0f completely dim, 1.0f full Dark


Set background blur

1	getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND,

2	WindowManager.LayoutParams.FLAG_BLUR_BEHIND);

The above settings are also valid for the dialog dialog box settings for transparent, translucent effects of activity transparentRes/values/styles.xml

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<resources> <styleName="Transparent"> <itemName="Android:windowbackground"> @color/transparent_background </item> <itemName="Android:windownotitle">true </item>&NBSP;&NBSP;      <item name= "android:windowistranslucent" >true</item>   &NBSP     <item name= "Android:windowanimationstyle" >          @+ Android:style/animation.translucent    </item >&NBSP;&NBSP;   </style >&NBSP;&NBSP; </resources>

Res/values/color.xml

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<?xml version= "1.0"  encoding= "utf-8" ?>&NBSP;&NBSP; <resources>&NBSP;&NBSP;    <color name= "Transparent_ Background "> #50000000 </color>    </resources>&NBSP;&NBSP; //Note: //color.xml #5000000 The first two bits are transparent effect parameters from 00--99 (transparent-not very transparent), //after 6-bit is the setting of the color

Manifest.xml

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<activity Android:name=". Transparentactivity " Android:theme="@style/transparent"> </activity>

Java code

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Public void OnCreate(Bundle savedinstancestate) { Super. onCreate(savedinstancestate); SetTheme(R.style. Transparent); Setcontentview(R.layout. Transparent); }

Configuration ends.

Android settings transparent, translucent, and other effects