Android Studio to write a simple flashlight app_android

Very good flashlight app, share to everybody, hope everybody likes.

1. Java Code

Package com.example.goo.gfire;
Import android.app.Activity;
Import Android.hardware.Camera;
Import Android.hardware.Camera.Parameters;
Import Android.os.Bundle;
Import Android.view.View;
 
 
Import Android.widget.Button;
  public class Fireactivity extends activity {private button button;
  Private Camera Camera = Camera.open ();
  Private Parameters Parameters;
 
  Private Boolean islight=true;
   public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
   Setcontentview (R.layout.activity_fire);
   Button = (button) This.findviewbyid (R.ID.BN); Button.setonclicklistener (New View.onclicklistener () {@Override public void OnClick (View v) {if islight
        ) {Camera.startpreview ();
        Parameters = Camera.getparameters ();
        Parameters.setflashmode (Parameters.flash_mode_torch);
        Camera.setparameters (parameters);
        Islight = false;
      Button.settext ("Off"); else {parameters = camera.GetParameters ();
        Parameters.setflashmode (Parameters.flash_mode_off);
        Camera.setparameters (parameters);
        Islight = true;
      Button.settext ("open");
  }
     }
 
   });
 }
}

2. Fireactivity.java

Package com.example.goo.gfire;
Import android.app.Activity;
Import Android.hardware.Camera;
Import Android.hardware.Camera.Parameters;
Import Android.os.Bundle;
Import Android.view.View;
 
 
Import Android.widget.Button;
  public class Fireactivity extends activity {private button button;
  Private Camera Camera = Camera.open ();
  Private Parameters Parameters;
 
  Private Boolean islight=true;
   public void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
   Setcontentview (R.layout.activity_fire);
   Button = (button) This.findviewbyid (R.ID.BN); Button.setonclicklistener (New View.onclicklistener () {@Override public void OnClick (View v) {if islight
        ) {Camera.startpreview ();
        Parameters = Camera.getparameters ();
        Parameters.setflashmode (Parameters.flash_mode_torch);
        Camera.setparameters (parameters);
        Islight = false;
      Button.settext ("Off"); else {parameters = camera.GetParameters ();
        Parameters.setflashmode (Parameters.flash_mode_off);
        Camera.setparameters (parameters);
        Islight = true;
      Button.settext ("open");
  }
     }
 
   });
 }
}

3. Content_fire.xml

<?xml version= "1.0" encoding= "Utf-8"?> <relativelayout xmlns:android= "http://schemas.android.com/apk/res/"
  Android "xmlns:app=" Http://schemas.android.com/apk/res-auto "xmlns:tools=" Http://schemas.android.com/tools " Android:layout_width= "Match_parent" android:layout_height= "match_parent" android:paddingbottom= "@dimen/activity_ Vertical_margin "android:paddingleft=" @dimen/activity_horizontal_margin "android:paddingright=" @dimen/activity_ Horizontal_margin "android:paddingtop=" @dimen/activity_vertical_margin "app:layout_behavior=" @string/appbar_ Scrolling_view_behavior "tools:context=" com.example.goo.gfire.FireActivity "tools:showin=" "@layout/activity_fire" > <textview android:layout_width= "match_parent" android:layout_height= "wrap_content" power Barrel mode "android:textsize=" 34SP "android:textstyle=" bold "android:gravity=" center "/> <button android:l
Ayout_width= "Match_parent" android:layout_height= "Wrap_content"    Android:id= "@+id/bn" android:textoff= "Off" android:texton= "open" android:height= "400DP" Android:layout_alig Nparentbottom= "true" android:layout_centerhorizontal= "true" android:layout_marginbottom= "59DP" Android:fontfea turesettings= "@string/auth_google_play_services_client_facebook_display_name" android:textcolor= "@color/common_ Signin_btn_dark_text_focused "android:textstyle=" bold "android:textsize=" 100sp "/> </relativelayout&
 Gt

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