使线性布局半透明和模糊

Question

所以我想要做的是创建一个线性布局的半透明和模糊的背景。

现在我有一个线性布局，完全黑色掩盖了一些信息，必须购买钥匙才能显示，但是我希望它被模糊，没有完全覆盖，因为它会破坏布局，它需要停留那里，只是模糊和难以辨认。

感谢您的帮助！

Answer 1

我不确定Linearlayout。但对于你的活动，你可以试试这个。

getWindow（）。setFlags（WindowManager.LayoutParams.FLAG_BLUR_BEHIND， WindowManager.LayoutParams.FLAG_BLUR_BEHIND）;

，并使用setContentView(R.layout.your_layout);方法

Answer 2

如果你想查看的任何背景半透明然后用下面的代码

android:background="@null" 

它的工作我的EditText。而且据我所知，应该对任何view.So工作，一旦尝试了这一个

Answer 3

如何试图GLSurfaceView：

http://developer.android.com/resources/articles/glsurfaceview.html

在Android SDK中有在得到透光面（应用程序/ TranslucentActivity.java为例），基本上设置alpha通道：

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

    // Create our Preview view and set it as the content of our 
    // Activity 
    mGLSurfaceView = new GLSurfaceView(this); 
    // We want an 8888 pixel format because that's required for 
    // a translucent window. 
    // And we want a depth buffer. 
    mGLSurfaceView.setEGLConfigChooser(8, 8, 8, 8, 16, 0); 
    // Tell the cube renderer that we want to render a translucent version 
    // of the cube: 
    mGLSurfaceView.setRenderer(new CubeRenderer(true)); 
    // Use a surface format with an Alpha channel: 
    mGLSurfaceView.getHolder().setFormat(PixelFormat.TRANSLUCENT); 
    setContentView(mGLSurfaceView); 
} 

对于其他线程使用Alpha通道是指：

Alpha Channel Blur

How can I blur and dim an image to be used as an activity background?

blur a image at android

另一个例子是应用程序/ TranslucentBlurActivity.java（从Android SDK中）：

public class TranslucentBlurActivity extends Activity { 
    /** 
    * Initialization of the Activity after it is first created. Must at least 
    * call {@link android.app.Activity#setContentView setContentView()} to 
    * describe what is to be displayed in the screen. 
    */ 
    @Override 
    protected void onCreate(Bundle icicle) { 
     // Be sure to call the super class. 
     super.onCreate(icicle); 

     // Have the system blur any windows behind this one. 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND, 
       WindowManager.LayoutParams.FLAG_BLUR_BEHIND); 

     // See assets/res/any/layout/translucent_background.xml for this 
     // view layout definition, which is being set here as 
     // the content of our screen. 
     setContentView(R.layout.translucent_background); 
    } 
}