启动系统Camera拍照（Android）

代码功能说明：启动手机自带camera应用，拍照后回到对应应用

    private static final int TAKE_PICTURE = 1;    private String TEMP_FILE = "";    public String buildFileName(){        Date now = new Date();        SimpleDateFormat formater = new SimpleDateFormat("yyMMdd-HHmmss");        String SDCARD = Environment.getExternalStorageDirectory() + "/";        String basePath = SDCARD + "Pictures/";        File dir = new File(basePath);        dir.mkdirs();        return basePath + formater.format(now) + ".jpg";    }    @Override    protected void onActivityResult(int requestCode, int resultCode, Intent data) {        String filename = "";        try {            if (resultCode == Activity.RESULT_OK && requestCode == TAKE_PICTURE) {                File file = new File(TEMP_FILE);                if(file.exists()){                    filename = file.getPath();                    Toast.makeText(MainActivity.this, "图片已保存在：" + filename, Toast.LENGTH_SHORT).show();                }                else {                    Toast.makeText(MainActivity.this, "图片保存失败", Toast.LENGTH_LONG).show();                }            }        } catch (Exception err) {            Log.e("Exception", err.getLocalizedMessage());        }    }    /**     * 拍照     */    public void doTakePicture(){        TEMP_FILE = buildFileName();        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); //调用摄像头拍照        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(TEMP_FILE))); //另存图片地址        startActivityForResult(intent, TAKE_PICTURE);    }

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