1 카메라 1.1 제어절차 1.2 관련주요메서드 1.3 제작철차 서피스뷰를생성하고이를제어하는서피스홀더객체를참조해야함. 매니페스트에퍼미션을지정해야한다.

Transcription

1 1 카메라 1.1 제어절차 서피스뷰를생성하고이를제어하는서피스홀더객체를참조해야함. 매니페스트에퍼미션을지정해야한다. 1.2 관련주요메서드 setpreviewdisplay() : startpreview() : stoppreview(); onpicturetaken() : 사진을찍을때자동으로호출되며캡처한이미지가전달됨 1.3 제작철차 Step 1 프로젝트를생성한후매니페스트에퍼미션들을설정한다. <uses-permission android:name="android.permission.camera"/> <uses-feature android:name="android.hardware.camera"/> <uses-feature android:name="android.hardware.camera.autofocus"/> <uses-permission android:name="android.permission.write_external_storage"/> Step 2 카메라정보가표시될 Surface 와버튼을추가하여 setcontentview() 를설정한다. cameraview = new CameraSurfaceView(getApplicationContext()); // 카메라회전을고정시킴 this.setrequestedorientation(activityinfo.screen_orientation_landscape); LinearLayout layout = new LinearLayout(this); Button btn = new Button(this); btn.settext("click"); layout.addview(btn); layout.addview(cameraview); setcontentview(layout); Step 3 SurfaceView 와 SurfaceViewHolder.Callback 을구현하여카메라관련클래스를구성한다. public class CameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback { public CameraSurfaceView(Context context) { super(context);

2 public void surfacecreated(surfaceholder holder) { public void surfacechanged(surfaceholder holder, int format, int width, int height) { public void surfacedestroyed(surfaceholder holder) { // TODO Auto-generated method stub Step 4 CameraSurfaceView 클래스의생성자안에서 SurfaceHolder 와 Callback 처리를해둔다. public class CameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mholder; Camera camera; Context context;... public CameraSurfaceView(Context context) { super(context); this.context = context; mholder = getholder(); mholder.addcallback(this); Log.e("CameraSurfaceView", "CameraSurfaceView"); Step 5 Surface 가생성되었을때카메라객체를생성하고카메라영상을담을홀더를정해놓는다. public void surfacecreated(surfaceholder holder) { try{ camera = Camera.open(); camera.setpreviewdisplay(holder); catch(exception ex){ Step 6 카메라의영상을특정영역에표시한다. public void surfacechanged(surfaceholder holder, int format, int width, int height) {

3 try{ Camera.Parameters param = camera.getparameters(); param.setflashmode(param.flash_mode_on);// flash mode on camera.setparameters(param); catch(exception ex){ Step 7 어플이종료되거나 Surface 가닫혔을때카메라를닫는다. public void surfacedestroyed(surfaceholder holder) { // TODO Auto-generated method stub camera.stoppreview(); Step 8 버튼이눌려지면영상을촬영하여이미지로저장한다. public void getpicture(){ camera.takepicture(null, null, new PictureCallback(){ public void onpicturetaken(byte[] data, Camera camera) { Bitmap picture = BitmapFactory.decodeByteArray(data, 0, data.length); MediaStore.Images.Media.insertImage(context.getContentResolver(), picture, "Test", "Test image"); Toast.makeText(context, " 사진이저장되었습니다,", Toast.LENGTH_LONG).show(); ); [ 전체소스 ] manifest 파일 AndroidManifest.xml <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android=" package="com.example.cameraex" android:versioncode="1" android:versionname="1.0" > <uses-sdk android:minsdkversion="8" android:targetsdkversion="16" /> <uses-permission android:name="android.permission.camera"/> <uses-feature android:name="android.hardware.camera"/> <uses-feature android:name="android.hardware.camera.autofocus"/> <application android:icon="@drawable/ic_launcher"

4 > <activity android:name="com.example.cameraex.cameramain" > <intent-filter> <action android:name="android.intent.action.main" /> <category android:name="android.intent.category.launcher" /> </intent-filter> </activity> </application> </manifest> CameraMain.java(Activity) package com.example.cameraex; import android.os.bundle; import android.app.activity; import android.content.pm.activityinfo; import android.view.menu; import android.view.menuitem; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; import android.widget.framelayout; import android.widget.linearlayout; import android.support.v4.app.navutils; public class CameraMain extends Activity { CameraSurfaceView cameraview; public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); cameraview = new CameraSurfaceView(getApplicationContext()); // 카메라회전을고정시킴 this.setrequestedorientation(activityinfo.screen_orientation_landscape); LinearLayout layout = new LinearLayout(this); Button btn = new Button(this); btn.settext("click"); btn.setonclicklistener(new OnClickListener() { public void onclick(view v) { cameraview.getpicture(); ); layout.addview(btn); layout.addview(cameraview); setcontentview(layout);

5 public boolean oncreateoptionsmenu(menu menu) { getmenuinflater().inflate(r.menu.camera_main, menu); return true; CameraSurfaceView.java package com.example.cameraex; import android.content.context; import android.graphics.bitmap; import android.graphics.bitmapfactory; import android.hardware.camera; import android.hardware.camera.picturecallback; import android.provider.mediastore; import android.util.log; import android.view.surface; import android.view.surfaceholder; import android.view.surfaceview; import android.widget.toast; public class CameraSurfaceView extends SurfaceView implements SurfaceHolder.Callback { SurfaceHolder mholder; Camera camera; Context context; public CameraSurfaceView(Context context) { super(context); this.context = context; mholder = getholder(); mholder.addcallback(this); public void surfacecreated(surfaceholder holder) { try{ camera = Camera.open(); camera.setpreviewdisplay(holder); catch(exception ex){ public void surfacechanged(surfaceholder holder, int format, int width, int height) { try{ Camera.Parameters param = camera.getparameters(); param.setflashmode(param.flash_mode_on);// flash mode on camera.setparameters(param);

6 catch(exception ex){ Log.e("surfaceChanged", ex.tostring()); public void getpicture(){ camera.takepicture(null, null, new PictureCallback(){ data.length); public void onpicturetaken(byte[] data, Camera camera) { Bitmap picture = BitmapFactory.decodeByteArray(data, 0, MediaStore.Images.Media.insertImage(context.getContentResolver(), picture, "Test", "Test image"); Toast.makeText(context, " 사진이저장되었습니다,", Toast.LENGTH_LONG).show(); ); public void surfacedestroyed(surfaceholder holder) { // TODO Auto-generated method stub camera.stoppreview();