Android实现拍照及从相册获取图片

首先要检查android6.0的权限Android7.0的在拍照时检查

//动态相机权限：if (ContextCompat.checkSelfPermission(MainActivity.this,        android.Manifest.permission.WRITE_EXTERNAL_STORAGE)        != PackageManager.PERMISSION_GRANTED) {    ActivityCompat.requestPermissions(MainActivity.this,            new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE},            000);} else {    //权限已经被授予，在这里直接写要执行的相应方法即可    toPhoto();}

//动态图库权限if (ContextCompat.checkSelfPermission(MainActivity.this,        android.Manifest.permission.READ_EXTERNAL_STORAGE)        != PackageManager.PERMISSION_GRANTED) {    ActivityCompat.requestPermissions(MainActivity.this,            new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE},            111);} else {    //权限已经被授予，在这里直接写要执行的相应方法即可    selectPicture();}

权限要重写onRequestPermissionsResult()方法

@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {    switch (requestCode) {        case 000:            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                toPhoto();            } else {                Toast.makeText(mActivity, "权限被拒绝", Toast.LENGTH_SHORT).show();            }            break;        case 111:            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                selectPicture();            } else {                Toast.makeText(mActivity, "权限被拒绝", Toast.LENGTH_SHORT).show();            }            break;        default:            super.onRequestPermissionsResult(requestCode, permissions, grantResults);    }}

拍照

 public void toPhoto()//拍照    {       
Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);outputImage = new File(Environment.getExternalStorageDirectory()+File.separator+System.currentTimeMillis()+".jpg");int currentapiVersion=Build.VERSION.SDK_INT;if(currentapiVersion<24){    imageUri=Uri.fromFile(outputImage);    intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);}else{    ContentValues contentValues=new ContentValues(1);    contentValues.put(MediaStore.Images.Media.DATA,outputImage.toString());    imageUri= getApplication().getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,contentValues);    intent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);}startActivityForResult(intent,000);
    }
选择相册的图片
public void selectPicture()//从相册选择图片{    Intent intent=new Intent();    intent.setAction(Intent.ACTION_PICK);//Pick an item from the data    intent.setType("image/*");//从所有图片中进行选择    startActivityForResult(intent, 1);}
最后从onActivityResult()方法中获取图片的位置
 @Override    public void onActivityResult(int requestCode, int resultCode, Intent data) {        super.onActivityResult(requestCode, resultCode, data);        switch (requestCode)        {            case 0:                if(resultCode==RESULT_OK){                    tv_pinfen02.setVisibility(View.GONE);                    tv_pinfen01.setVisibility(View.GONE);//                      String date=data.getData().toString();//                      Log.e("text",date);//                      Bitmap bitmap=(Bitmap)data.getExtras().get("data");                    BitmapFactory.Options options=new BitmapFactory.Options();                    options.inJustDecodeBounds=true;                    BitmapFactory.decodeFile(outputImage.getAbsolutePath(),options);//                      WindowManager manager=getActivity().getWindowManager();//                      int screenWidth=manager.getDefaultDisplay().getWidth();//                      int screenHeight=manager.getDefaultDisplay().getHeight();                    WindowManager manager=getWindowManager();                    DisplayMetrics outMetrics=new DisplayMetrics();                    manager.getDefaultDisplay().getMetrics(outMetrics);//                    int screenWidth=outMetrics.widthPixels;//                    int screenHeight=outMetrics.heightPixels;                    int screenWidth=480;                    int screenHeight=800;                    int width=options.outWidth;                    int height=options.outHeight;                    int sampleSize=1;                    Log.e("text","screenWidth===="+screenWidth);                    Log.e("text","screenHeight==="+screenHeight);                    while((width/sampleSize)>screenWidth||(height/sampleSize)>screenHeight){                        sampleSize*=2;                    }                    options.inSampleSize=sampleSize;                    options.inJustDecodeBounds=false;                    options.inPreferredConfig= Bitmap.Config.RGB_565;                    options.inDither=true;                    Bitmap bitmap=BitmapFactory.decodeFile(outputImage.getAbsolutePath(),options);//                      Bitmap bitmap=BitmapFactory.decodeFile(outputImage.getAbsolutePath());//可能会造成内存溢出                    iv_image.setImageBitmap(bitmap);                                  }                break;            case 1:                if (resultCode==RESULT_OK) {//从相册选择照片不裁切                    try {                        tv_pinfen02.setVisibility(View.GONE);                        tv_pinfen01.setVisibility(View.GONE);                        Uri selectedImage = data.getData(); //获取系统返回的照片的Uri                        String[] filePathColumn = { MediaStore.Images.Media.DATA };                        Cursor cursor =getContentResolver().query(selectedImage,                                filePathColumn, null, null, null);//从系统表中查询指定Uri对应的照片                        cursor.moveToFirst();                        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);                        String picturePath = cursor.getString(columnIndex);  //获取照片路径                        cursor.close();                        BitmapFactory.Options options=new BitmapFactory.Options();                        options.inJustDecodeBounds=true;                        BitmapFactory.decodeFile(picturePath,options);                        int simpleSize=1;                        WindowManager manager=getWindowManager();//                        int screenWidth=manager.getDefaultDisplay().getWidth();//                        int screenHeight=manager.getDefaultDisplay().getHeight();                        int screenWidth=480;                        int screenHeight=800;                        int width=options.outWidth;                        int heigth=options.outHeight;                        while((width/simpleSize)>screenWidth||(heigth/simpleSize)>screenHeight){                            simpleSize*=2;                        }                        options.inSampleSize=simpleSize;                        options.inJustDecodeBounds=false;                        options.inPreferredConfig=Bitmap.Config.RGB_565;                        options.inDither=true;                        Bitmap bitmap=BitmapFactory.decodeFile(picturePath,options);                        iv_image.setImageBitmap(bitmap);                    } catch (Exception e) {                        // TODO Auto-generatedcatch block                        e.printStackTrace();                    }                }                break;
             }
最后附一个拍照从相册选择图片并截图的链接
http://www.cnblogs.com/w-y-f/p/4028379.html

7.0拍照的接口http://blog.csdn.net/jdfkldjlkjdl/article/details/59586342

发送广播提醒手机刷新相册

File file = new File(path);if (file.exists()) {    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file)));}

File file = new File(path);if (file.exists()) {    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file)));}