android - Android 我使用 Intent 拍照

Question

使用此代码，我可以拍照，但在onCreate() 中，图像的名称是静态的，例如“name.jpg”，但是当我将其更改为 new Date().toString()+".jpg"时，它停止工作.. .请帮我根据拍摄的时间使图像的名称动态化。谢谢

          public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.picturelayout);
        String imageName=new Date().toString();
        path=Environment.getExternalStorageDirectory()+"/TrackMe/"+"name.jpg";
    }
    public void CLICK(View v)
    {
        File f=new File(path);

         Uri myuri=Uri.fromFile(f);
         Intent i =new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
         i.putExtra(MediaStore.EXTRA_OUTPUT, myuri);
         startActivityForResult(i, 0);
    }
     public void back(View view){
         Intent intentBack=new Intent(getApplicationContext(),SettingsActivity.class);
         startActivity(intentBack);
     }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode==0)
        {
            Toast.makeText(getApplicationContext(), "Photo not taken", 
Toast.LENGTH_LONG).show();
        }
        else
        {
        Bitmap bm = BitmapFactory.decodeFile(path); 
        ImageView iv=(ImageView)findViewById(R.id.trackMePicture);
        iv.setImageBitmap(bm);
        }
    } 

Answer 1

生成时间戳为

SimpleDateFormat s = new SimpleDateFormat("ddhhmmss");
format = s.format(new Date());

Answer 2

用这个

    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");
    String imageName = sdf.format(new Date());
    path=Environment.getExternalStorageDirectory()+"/TrackMe/"+imageName+".jpg"; 

Answer 3

试试这个，

为了获取日期值，

String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());

使用此字符串保存

 path=Environment.getExternalStorageDirectory()+"/TrackMe/"+"timeStamp.jpg"