Flashlight Project Development A Flash

Focus:

1, Surfaceview, OpenGL ES texture------camera capture image stream texture

2, style.xml configuration file. Set up information such as Untitled

<!--application theme. --<style name= "Apptheme" parent= "Appbasetheme" > <item name= "Android:windownotitle" >true</item&      Gt <item name= "Android:windowfullscreen" >true</item> <item name= "Android:windowbackground" >@ Drawable/bg</item> </style>

3. Use framelayout layout,<include/> label to introduce sub-layout.
Main.xml

<p><framelayout xmlns:android= "<a target=_blank href=" Http://schemas.android.com/apk/res/android "> Http://schemas.android.com/apk/res/android</a> "xmlns:tools=" <a target=_blank href= "/http/    Schemas.android.com/tools ">http://schemas.android.com/tools</a>" android:layout_width= "Match_parent" android:layout_height= "Match_parent" android:background= "@drawable/bg" ><include layout= "@layout/mui_ Flashlight "/></p><p></framelayout></p>

Ui_flashlight.xml

<?xml version= "1.0"  encoding= "Utf-8"? ><framelayout xmlns:android= "http// Schemas.android.com/apk/res/android "    android:layout_width=" Match_parent "     android:layout_height= "Match_parent"      android:id= "@+id/mui_flashlight"     >    <ImageView          android:id= "@+id/img_flashlight"         android:layout_ Width= "Match_parent"         android:layout_height= "Match_parent"          android:src= "@drawable/flashlight"                  />    <imageview          android:id= "@+id/img_flashlight_controller"          andRoid:layout_width= "Match_parent"         android:layout_height= "Match_ Parent "        android:layout_gravity=" Bottom|center_horizontal "         android:onclick= "Onclick_flashlight"          /></FrameLayout>

4, the use of flash.xml file to achieve the gradient effect, and then the use of android:src= "@drawable/flashlight", introduced.
Flash.xml

<?xml version= "1.0" encoding= "Utf-8"? ><transition xmlns:android= "http://schemas.android.com/apk/res/ Android "> <item android:drawable=" @drawable/off "/> <item android:drawable=" @drawable/on "/></tran Sition>

5. Function code

Flashlight.java

public class myflashlight extends mybaseactivity {  @Override  protected  void oncreate (bundle savedinstancestate)  {  super.oncreate (savedInstanceState);     iview.settag (false);     //gets the size of the screen   point point   = new point ();   getwindowmanager (). Getdefaultdisplay (). GetSize (point);   LayoutParams layoutParams =  (Layoutparams)  iviewcontroller.getlayoutparams ();   //setting the range of hotspot areas   layoutParams.height = point.y * 3/4;   Layoutparams.width = point.x /3;  iviewcontroller.setlayoutparams (LayoutParams);  }  public void onclick_flashlight (View view) {  if  (! Getpackagemanager (). Hassystemfeature (Packagemanager.feature_camera_flash))  {       toast.maketext (this,  "Current device No flash",  toaSt. Length_short). Show ();   return;  }  if  (((Boolean) Iview.gettag ())  == false)  {   openflashlight ();  } else {    Closeflashlight ();   } } private void openflashlight ()  {  // Transitiondrawable is a special drawable object that enables the fading effect between two drawable resources   transitiondrawable tdrawable  =  (transitiondrawable)  iview.getdrawable ()   //switching time 200 ms    Tdrawable.starttransition (+);   iview.settag (True);    try {    //Open Camera    mcamera = camera.open ();    int texturid =  0; //Preview texture defaults to a value      //camera gets the image stream texture    mcamera.setpreviewtexture (new  surfacetexture (Texturid));    //start preview    mcamera.startpreview ();    //using GetParameters () to get the default configuration parameters for camera    mparameters = mcamera.getparameters ();    //set Flash mode     mparameters.setflashmode (Mparameters.flash_mode_torch);    mcamera.setparameters ( mparameters);  } catch  (ioexception e)  {   e.printstacktrace ();   }       }   private void  Closeflashlight ()  {  TransitionDrawable tDrawable2 =  (transitiondrawable)   Iview.getdrawable ();  if  ((Boolean)  iview.gettag ())  {   //Invert time Toggle    tdrawable2.reversetransition (+);    iview.settag (false);    if   (mcamera != null)  {    //use GetParameters () to get the default configuration parameters for camera       mparameters = mcamera.getparameters ();     //set Flash mode      mparameters.setflashmode (ParametERs. Flash_mode_off);     mcamera.setparameters (mparameters);     //Stop preview     mcamera.stoppreview ();     //release Camera Object      Mcamera.release ();     //to recycle the garbage collector as soon as possible     mCamera = null;        }  }   } //exit program turn off Flash   @Override  protected void onpause ()  {  super.onpause ();   closeflashlight ();  }}

Complete code See Attachment (Enter my profile to download): Myflashlight.zip

Useful Code Reference:

http://blog.csdn.net/dclchj/article/details/7421778

Http://www.cnblogs.com/over140/archive/2012/09/26/2611999.html

Flashlight Project Development A Flash