anddoid-camera-onActivityResult-Intent null

Question

我正在尝试开发一个应用程序，它涉及捕获图像，裁剪图像并将其保存到应用程序数据库。在这个过程中，我遇到了一个错误，这似乎很常见，但不清楚：

  

＆＃39;意图＆＃39; ＆＃39; onActivityResult＆＃39;中的参数method为null。

以下是活动代码：

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ImageView;
import android.widget.Toast;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;


public class ScanActivity extends Activity {
ImageView imgFavorite;

//keep track of camera capture intent
final int CAMERA_CAPTURE = 1;
//captured picture uri
private Uri picUri;
//keep track of cropping intent
final int PIC_CROP = 2;


@Override
protected void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_scan);
    imgFavorite = (ImageView)findViewById(R.id.imageView1);
    try {
        Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, CAMERA_CAPTURE);
    }
    catch(Exception e){
        String errormesage="Oops-your device doesnt support capturing images!";
        Toast.makeText(ScanActivity.this,errormesage,Toast.LENGTH_SHORT).show();
    }

}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    ContentResolver cr=getContentResolver();
    String imageName = new SimpleDateFormat("yyyy.MM.dd.HH.mm.ss").format(new Date());

    File photo=new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),imageName);
    Uri selectedImage=Uri.fromFile(photo);
    Bitmap bp ;
    try{
        //user is returning from capturing an image using the camera
            if (resultCode == RESULT_OK && requestCode == CAMERA_CAPTURE) {
            picUri=data.getData();

            //carry out the crop operation
             performCrop(picUri);

            bp = MediaStore.Images.Media.getBitmap(cr, selectedImage);
            imgFavorite.setImageBitmap(bp);
            Toast.makeText(ScanActivity.this,"Captured Successfully",Toast.LENGTH_SHORT).show();

        }
        else if (requestCode==PIC_CROP)
        {
            if(data!=null) {
                //get the returned data
                Bundle extras = data.getExtras();
                //get the cropped bitmap
                Bitmap thePic = extras.getParcelable("data");

                //retrieve a reference to the ImageView
                ImageView picView = (ImageView) findViewById(R.id.imageView1);

                //display the returned cropped image
                picView.setImageBitmap(thePic);

                // open();
                //1  Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                //startActivityForResult(intent, 0);
                //1 startActivityForResult(intent,1);
            }

        }
        else if(resultCode == RESULT_CANCELED){
            Toast.makeText(getApplicationContext(),
                    "User cancelled image capture", Toast.LENGTH_SHORT).show();
        }

    }catch(Exception e){
        Log.e(logtag,e.toString());
        String errormesage="scan failed";
        Toast.makeText(ScanActivity.this,errormesage,Toast.LENGTH_SHORT).show();
    }
}

private void performCrop(Uri picUri){

  try {
      //call the standard crop action intent (the user device may not support it)
      Intent cropIntent = new Intent("com.android.camera.action.CROP");
      System.out.println("Past intent");
      //indicate image type and Uri
      cropIntent.setDataAndType(picUri, "image/*");
      //set crop properties
      cropIntent.putExtra("crop", "true");
      //indicate aspect of desired crop
      cropIntent.putExtra("aspectX", 2);
      cropIntent.putExtra("aspectY", 1);
      //indicate output X and Y
      cropIntent.putExtra("outputX", 128);
      cropIntent.putExtra("outputY", 128);
      //retrieve data on return
      cropIntent.putExtra("return-data", true);
      //start the activity - we handle returning in onActivityResult
      startActivityForResult(cropIntent, PIC_CROP);
      System.out.println("Past start activity for intent");
  }

    catch(Exception e){
        //display an error message
        String errorMessage = "oops - your device doesn't support the crop action!";
        Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
        toast.show();
        System.out.println("exception message is :"+e.getMessage());
    }
}