android中surfaceHolder类型的设置--setType

hondyuu 2014-05-06 08:26:42
要为surfaceHolder设置类型是要用到setType方法,但是我在用的时候出现警告The method setType(int) from the type SurfaceHolder is deprecated; 意思应该是说版本不支持setType了,我想请问一下能否用另一个方法代替setType或者如何解决这个过期的问题?
所用语句如下:
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); //设置类型
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harvest863 2014-08-16
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可以直接删掉这个函数的调用了
hondyuu 2014-05-08
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谢谢!不过我主要是想问一下有没有另外一种方法能代替这种方法,而且有不会出现兼容性问题。
Darcy杨 2014-05-07
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这个方法主要是为了兼容旧的API,要是嫌警告难看,就加一个“@SuppressWarnings("deprecation")”
package com.hsy.Zxing.Activity; import java.io.IOException; import java.util.Vector; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.content.res.AssetFileDescriptor; import android.graphics.Bitmap; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.media.AudioManager; import android.media.MediaPlayer; import android.media.MediaPlayer.OnCompletionListener; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Vibrator; import android.view.SurfaceHolder; import android.view.SurfaceHolder.Callback; import android.view.SurfaceView; import com.google.zxing.BarcodeFormat; import com.google.zxing.Result; import com.hsy.Zxing.Gan.camera.CameraManager; import com.hsy.Zxing.Gan.decoding.CaptureActivityHandler; import com.hsy.Zxing.Gan.decoding.InactivityTimer; import com.hsy.Zxing.Gan.view.ViewfinderView; import com.zijunlin.Zxing.Demo.R; public class CaptureActivity extends Activity implements Callback { private CaptureActivityHandler handler; private ViewfinderView viewfinderView; private boolean hasSurface; private Vector decodeFormats; private String characterSet; private InactivityTimer inactivityTimer; private MediaPlayer mediaPlayer; private boolean playBeep; private static final float BEEP_VOLUME = 0.10f; private boolean vibrate; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 初始化 CameraManager CameraManager.init(getApplication()); viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view); hasSurface = false; inactivityTimer = new InactivityTimer(this); } @Override protected void onResume() { super.onResume(); SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view); SurfaceHolder surfaceHolder = surfaceView.getHolder(); if (hasSurface) { initCamera(surfaceHolder); } else { surfaceHolder.addCallback(this); surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } decodeFormats = null; characterSet = null; playBeep = true; AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE); if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) { playBeep = false; } initBeepSound(); vibrate = true; } @Override protected void onPause() { super.onPause(); if (handler != null) { handler.quitSynchronously(); handler = null; } CameraManager.get().closeDriver(); } @Override protected void onDestroy() { inactivityTimer.shutdown(); super.onDestroy(); } private void initCamera(SurfaceHolder surfaceHolder) { try { CameraManager.get().openDriver(surfaceHolder); } catch (IOException ioe) { return; } catch (RuntimeException e) { return; } if (handler == null) { handler = new CaptureActivityHandler(this, decodeFormats, characterSet); } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } @Override public void surfaceCreated(SurfaceHolder holder) { if (!hasSurface) { hasSurface = true; initCamera(holder); } } @Override public void surfaceDestroyed(SurfaceHolder holder) { hasSurface = false; } public ViewfinderView getViewfinderView() { return viewfinderView; } public Handler getHandler() { return handler; } public void drawViewfinder() { viewfinderView.drawViewfinder(); } public void handleDecode(final Result obj, Bitmap barcode) { inactivityTimer.onActivity(); playBeepSoundAndVibrate(); AlertDialog.Builder dialog = new AlertDialog.Builder(this); if (barcode == null) { dialog.setIcon(null); } else { Drawable drawable = new BitmapDrawable(barcode); dialog.setIcon(drawable); } dialog.setTitle("扫描结果"); dialog.setMessage(obj.getText()); dialog.setNegativeButton("确定", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { //用默认浏览器打开扫描得到的地址 Intent intent = new Intent(); intent.setAction("android.intent.action.VIEW"); Uri content_url = Uri.parse(obj.getText()); intent.setData(content_url); startActivity(intent); finish(); } }); dialog.setPositiveButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { finish(); } }); dialog.create().show(); } private void initBeepSound() { if (playBeep && mediaPlayer == null) { // The volume on STREAM_SYSTEM is not adjustable, and users found it // too loud, // so we now play on the music stream. setVolumeControlStream(AudioManager.STREAM_MUSIC); mediaPlayer = new MediaPlayer(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setOnCompletionListener(beepListener); AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep); try { mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength()); file.close(); mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME); mediaPlayer.prepare(); } catch (IOException e) { mediaPlayer = null; } } } private static final long VIBRATE_DURATION = 200L; private void playBeepSoundAndVibrate() { if (playBeep && mediaPlayer != null) { mediaPlayer.start(); } if (vibrate) { Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE); vibrator.vibrate(VIBRATE_DURATION); } } /** * When the beep has finished playing, rewind to queue up another one. */ private final OnCompletionListener beepListener = new OnCompletionListener() { public void onCompletion(MediaPlayer mediaPlayer) { mediaPlayer.seekTo(0); } }; }
简易相机用以练习 private SurfaceView surface; private Button shutter,position,back;//快门 private SurfaceHolder holder; private Camera camera;//声明相机 private String filepath = "";//照片保存路径 private int cameraPosition = 1;//0代表前置摄像头,1代表后置摄像头 public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE);//没有标题 this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);//设置全屏 this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);//拍照过程屏幕一直处于高亮 //设置手机屏幕朝向,一共有7种 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR); //SCREEN_ORIENTATION_BEHIND: 继承Activity堆栈当前Activity下面的那个Activity的方向 //SCREEN_ORIENTATION_LANDSCAPE: 横屏(风景照) ,显示时宽度大于高度 //SCREEN_ORIENTATION_PORTRAIT: 竖屏 (肖像照) , 显示时高度大于宽度 //SCREEN_ORIENTATION_SENSOR 由重力感应器来决定屏幕的朝向,它取决于用户如何持有设备,当设备被旋转时方向会随之在横屏与竖屏之间变化 //SCREEN_ORIENTATION_NOSENSOR: 忽略物理感应器——即显示方向与物理感应器无关,不管用户如何旋转设备显示方向都不会随着改变("unspecified"设置除外) //SCREEN_ORIENTATION_UNSPECIFIED: 未指定,此为默认值,由Android系统自己选择适当的方向,选择策略视具体设备的配置情况而定,因此不同的设备会有不同的方向选择 //SCREEN_ORIENTATION_USER: 用户当前的首选方向 setContentView(R.layout.activity_main); back = (Button) findViewById(R.id.camera_back); position = (Button) findViewById(R.id.camera_position); surface = (SurfaceView) findViewById(R.id.camera_surface); shutter = (Button) findViewById(R.id.camera_shutter); holder = surface.getHolder();//获得句柄 holder.addCallback(this);//添加回调 holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);//surfaceview不维护自己的缓冲区,等待屏幕渲染引擎将内容推送到用户面前 //设置监听 back.setOnClickListener(listener); position.setOnClickListener(listener); shutter.setOnClickListener(listener);

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