android自定义相机带取景框

package com.milter.www.customviewforblog.camera; import android.annotation.TargetApi; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.BitmapRegionDecoder; import android.graphics.Matrix; import android.graphics.PixelFormat; import android.graphics.Rect; import android.hardware.Camera; import android.os.AsyncTask; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.util.DisplayMetrics; import android.util.Log; import android.view.Display; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.view.animation.ScaleAnimation; import android.widget.Button; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast; import com.milter.www.customviewforblog.R; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.lang.reflect.Method; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.Iterator; import java.util.List; /** * 相机界面 * Created by sky on 15/7/6. */ public class CameraActivity extends CameraBaseActivity { private CameraHelper mCameraHelper; private Camera.Parameters parameters = null; private Camera cameraInst = null; private Bundle bundle = null; private float pointX, pointY; static final int FOCUS = 1; // 聚焦 static final int ZOOM = 2; // 缩放 private int mode; //0是聚焦 1是放大 private float dist; private int PHOTO_SIZE = 2000; private int mCurrentCameraId = 0; //1是前置 0是后置 private Handler handler = new Handler(); private LinearLayout photoArea; private View takePhotoPanel; private Button takePicture; private ImageView flashBtn; // private ImageView changeBtn; private View focusIndex; private SurfaceView surfaceView; private int height; private TextView mMakesure; private TextView mReplay; private ImageView mCperture; public int getDpi(Activity activity) { int dpi = 0; Display display = activity.getWindowManager().getDefaultDisplay(); DisplayMetrics dm = new DisplayMetrics(); @SuppressWarnings("rawtypes") Class c; try { c = Class.forName("android.view.Display"); @SuppressWarnings("unchecked") Method method = c.getMethod("getRealMetrics", DisplayMetrics.class); method.invoke(display, dm); dpi = dm.heightPixels; } catch (Exception e) { e.printStackTrace(); } return dpi; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_camera1); int useHeight = getWindowManager().getDefaultDisplay().getHeight(); int allHeight = getDpi(this); photoArea = (LinearLayout) findViewById(R.id.photo_area); takePhotoPanel = findViewById(R.id.panel_take_photo); takePicture = (Button) findViewById(R.id.takepicture); flashBtn = (ImageView) findViewById(R.id.flashBtn); // changeBtn = (ImageView) findViewById(R.id.change); mCperture = (ImageView) findViewById(R.id.activity_camera_aperture); mReplay = (TextView) findViewById(R.id.activity_camera_replay); mMakesure = (TextView) findViewById(R.id.activity_camera_makesure); // backBtn = (ImageView) findViewById(R.id.back); focusIndex = findViewById(R.id.focus_index); View mCameraView = findViewById(R.id.activity_camera_view); surfaceView = (SurfaceView) findViewById(R.id.surfaceView); mCameraHelper = new CameraHelper(this); initView(); initEvent(); ///适配华为等具有虚拟按键的手机 if (useHeight < allHeight) { RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT); RelativeLayout.LayoutParams params1 = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT); params.bottomMargin = allHeight - useHeight; params1.height = allHeight - useHeight; params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE); params1.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE); takePhotoPanel.setLayoutParams(params); mCameraView.setLayoutParams(params1); } } private void initView() { SurfaceHolder surfaceHolder = surfaceView.getHolder(); surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); surfaceHolder.setKeepScreenOn(true); surfaceView.setFocusable(true); surfaceView.setBackgroundColor(TRIM_MEMORY_BACKGROUND); surfaceView.getHolder().addCallback(new SurfaceCallback());//为SurfaceView的句柄添加一个回调函数 } private void initEvent() { mReplay.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if (cameraInst == null) return; cameraInst.startPreview(); mReplay.setVisibility(View.INVISIBLE); mMakesure.setVisibility(View.INVISIBLE); takePicture.setVisibility(View.VISIBLE); mCperture.setVisibility(View.VISIBLE); } }); mMakesure.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { } }); //拍照 takePicture.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { try { cameraInst.takePicture(null, null, new MyPictureCallback()); } catch (Throwable t) { t.printStackTrace(); toast("拍照失败，请重试！", Toast.LENGTH_LONG); try { cameraInst.startPreview(); } catch (Throwable e) { } } } }); //闪光灯 flashBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { turnLight(cameraInst); } }); /*//返回按钮 backBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { finish(); } });*/ surfaceView.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch (event.getAction() & MotionEvent.ACTION_MASK) { // 主点按下 case MotionEvent.ACTION_DOWN: pointX = event.getX(); pointY = event.getY(); mode = FOCUS; break; // 副点按下 case MotionEvent.ACTION_POINTER_DOWN: dist = spacing(event); // 如果连续两点距离大于10，则判定为多点模式 if (spacing(event) > 10f) { mode = ZOOM; } break; case MotionEvent.ACTION_UP: case MotionEvent.ACTION_POINTER_UP: mode = FOCUS;