android自定义camera

package com.camera.preview; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import android.app.Activity; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Bitmap.CompressFormat; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.MediaStore; import android.text.format.DateFormat; import android.util.Log; import android.view.KeyEvent; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.view.View.OnClickListener; import android.widget.ImageView; import com.camera.preview.CameraPreview.OnCameraStatusListener; import com.example.cam.R; public class CameraActivity extends Activity implements SensorEventListener, OnCameraStatusListener { public static final Uri IMAGE_URI = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; public static final String PATH = Environment.getExternalStorageDirectory().toString() + "/AndroidMedia/"; private CameraPreview mCameraPreview; private ImageView mFlash; private CameraFocusView cameraFocusBox; private boolean mAutoFocus = true; private boolean mFlashBoolean = false; private SensorManager mSensorManager; private Sensor mSensor; private boolean mInitialized = false; private float mLastX = 0; private float mLastY = 0; private float mLastZ = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.activity_camera); mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE); mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); mFlash = (ImageView) findViewById(R.id.flash); mFlash.setOnClickListener(flashListener); cameraFocusBox = (CameraFocusView) findViewById(R.id.focusbox); mCameraPreview = (CameraPreview) findViewById(R.id.preview); mCameraPreview.setOnCameraStatusListener(this); mCameraPreview.setCameraFocusView(cameraFocusBox); } @Override protected void onPause() { super.onPause(); mSensorManager.unregisterListener(this); } @Override protected void onResume() { super.onResume(); mSensorManager.registerListener(this, mSensor, SensorManager.SENSOR_DELAY_UI); } private OnClickListener flashListener = new OnClickListener() { @Override public void onClick(View v) { if (mFlashBoolean) { mCameraPreview.setFlash(false); } else { mCameraPreview.setFlash(true); } mFlashBoolean = !mFlashBoolean; } }; public void onSensorChanged(SensorEvent event) { float x = event.values[0]; float y = event.values[1]; float z = event.values[2]; if (!mInitialized) { mLastX = x; mLastY = y; mLastZ = z; mInitialized = true; } float deltaX = Math.abs(mLastX - x); float deltaY = Math.abs(mLastY - y); float deltaZ = Math.abs(mLastZ - z); if (deltaX > .5 && mAutoFocus) { mAutoFocus = false; mCameraPreview.setCameraFocus(); } if (deltaY > .5 && mAutoFocus) { mAutoFocus = false; mCameraPreview.setCameraFocus(); } if (deltaZ > .5 && mAutoFocus) { mAutoFocus = false; mCameraPreview.setCameraFocus(); } mLastX = x; mLastY = y; mLastZ = z; } public void onAccuracyChanged(Sensor sensor, int accuracy) { } /** * 存储图像并将信息添加入媒体数据库 */ private Uri insertImage(ContentResolver cr, String name, long dateTaken, String directory, String filename, Bitmap source, byte[] jpegData) { OutputStream outputStream = null; String filePath = directory + filename; try { File dir = new File(directory); if (!dir.exists()) { dir.mkdirs(); } File file = new File(directory, filename); if (file.createNewFile()) { outputStream = new FileOutputStream(file); if (source != null) { source.compress(CompressFormat.JPEG, 75, outputStream); } else { outputStream.write(jpegData); } } } catch (FileNotFoundException e) { e.printStackTrace(); return null; } catch (IOException e) { e.printStackTrace(); return null; } finally { if (outputStream != null) { try { outputStream.close(); } catch (Throwable t) { } } } ContentValues values = new ContentValues(7); values.put(MediaStore.Images.Media.TITLE, name); values.put(MediaStore.Images.Media.DISPLAY_NAME, filename); values.put(MediaStore.Images.Media.DATE_TAKEN, dateTaken); values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); values.put(MediaStore.Images.Media.DATA, filePath); return cr.insert(IMAGE_URI, values); } /** * 相机拍照结束事件 */ @Override public void onCameraStopped(byte[] data) { Log.e("onCameraStopped", "==onCameraStopped=="); // 创建图像 Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); // 系统时间 long dateTaken = System.currentTimeMillis(); // 图像名称 String filename = DateFormat.format("yyyy-MM-dd kk.mm.ss", dateTaken).toString() + ".jpg"; // 存储图像（PATH目录） Uri uri = insertImage(getContentResolver(), filename, dateTaken, PATH, filename, bitmap, data); // 返回结果 Intent intent = getIntent(); intent.putExtra("uriStr", uri.toString()); intent.putExtra("dateTaken", dateTaken); // intent.putExtra("filePath", PATH + filename); // intent.putExtra("orientation", orientation); // 拍摄方向 setResult(20, intent); // 关闭当前Activity finish(); } /** * 拍摄时自动对焦事件 */ @Override public void onAutoFocus(boolean success) { mAutoFocus = true; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { finish(); } return super.onKeyDown(keyCode, event); } }