Ucrop活动跳过带有相机图像的操作：Android

Question

我使用Ucrop从相机中裁剪图像，但是活动跳过了。 这是我的MainActivity.java文件。 我想我缺少了一些东西。 我的代码长了一点，请看一看。 提前致谢。

package com.example.sathwik.uploadtrail1;

import java.io.File;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import android.app.Activity;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.yalantis.ucrop.UCrop;

public class MainActivity extends AppCompatActivity {
    // LogCat tag
    private static final String TAG = MainActivity.class.getSimpleName();
    // Camera activity request codes
    private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
    private static final int CAMERA_CAPTURE_VIDEO_REQUEST_CODE = 200;
    public static final int MEDIA_TYPE_IMAGE = 1;
    public static final int MEDIA_TYPE_VIDEO = 2;

    private Uri fileUri; // file url to store image/video
    private Button btnCapturePicture, btnRecordVideo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Changing action bar background color

        //getActionBar().setBackgroundDrawable(new ColorDrawable(Color.parseColor(getResources().getString(R.color.action_bar))));
        btnCapturePicture = (Button) findViewById(R.id.btnCapturePicture);
        btnRecordVideo = (Button) findViewById(R.id.btnRecordVideo);

        /**
        * Capture image button click event
        */
        btnCapturePicture.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            captureImage();
         }
        });
        /**
          Record video button click event
         */
        btnRecordVideo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            // record video
            recordVideo();
            }
            });
        // Checking camera availability
        if (!isDeviceSupportCamera()) {
        Toast.makeText(getApplicationContext(),
        "Sorry! Your device doesn't support camera",
        Toast.LENGTH_LONG).show();
        // will close the app if the device does't have camera
        finish();
        }
        }
    /**
      checking device has camera hardware or not
       */
    private boolean isDeviceSupportCamera() {
    if (getApplicationContext().getPackageManager().hasSystemFeature(
    PackageManager.FEATURE_CAMERA)) {
    // this device has a camera
    return true;
    } else {
    // no camera on this device
    return false;
    }
    }
    /**
          * Launching camera app to capture image
          */
    private void captureImage() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
        // start the image capture Intent
        startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);


    }


    /**
          * Launching camera app to record video
          */
    private void recordVideo() {
        Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
        fileUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO);
        // set video quality
        intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);// set the image file
        // name
        // start the video capture Intent
        startActivityForResult(intent, CAMERA_CAPTURE_VIDEO_REQUEST_CODE);
    }

    /** Perform UCrop */
    public void performUcrop(){
        UCrop.of(fileUri, fileUri).start(this);
    }
        /**
              * Here we store the file url as it will be null after returning from camera
              * app
              */
        @Override
        protected void onSaveInstanceState(Bundle outState) {
            super.onSaveInstanceState(outState);
            // save file url in bundle as it will be null on screen orientation
            // changes
            outState.putParcelable("file_uri", fileUri);
        }
        @Override
        protected void onRestoreInstanceState (Bundle savedInstanceState){
            super.onRestoreInstanceState(savedInstanceState);
            // get the file url
            fileUri = savedInstanceState.getParcelable("file_uri");
        }
        /**
              * Receiving activity result method will be called after closing the camera
              * */
        @Override
        protected void onActivityResult ( int requestCode, int resultCode, Intent data){
            // if the result is capturing Image
            if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
                if (resultCode == RESULT_OK) {

                    performUcrop();
                    // successfully captured the image
                    // launching upload activity
                    launchUploadActivity(true);
                } else if (resultCode == RESULT_CANCELED) {
                    // user cancelled Image capture
                    Toast.makeText(getApplicationContext(),
                            "Sorry! Failed to capture image", Toast.LENGTH_SHORT).show();
                }
            } else if (requestCode == CAMERA_CAPTURE_VIDEO_REQUEST_CODE) {
                if (resultCode == RESULT_OK) {
                    // video successfully recorded
                    //launching upload activity
                    launchUploadActivity(false);
                } else if (resultCode == RESULT_CANCELED) {
                    // user cancelled recording
                    Toast.makeText(getApplicationContext(), "Sorry! Failed to record video", Toast.LENGTH_SHORT).show();
                }
            }
        }
    private void launchUploadActivity(boolean isImage){
        Intent i = new Intent(MainActivity.this, UploadActivity.class);
        i.putExtra("filePath", fileUri.getPath());
        i.putExtra("isImage", isImage);
        startActivity(i);
    }

    /**
          * Creating file uri to store image/video
          */
    public Uri getOutputMediaFileUri(int type) {
    return Uri.fromFile(getOutputMediaFile(type));
    }

    /**
          * returning image / video
          */
    private static File getOutputMediaFile(int type) {

        // External sdcard location
        File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
                Config.IMAGE_DIRECTORY_NAME);

        // Create the storage directory if it does not exist
        if (!mediaStorageDir.exists()) {
            if (!mediaStorageDir.mkdirs()) {
                Log.d(TAG, "Oops! Failed create "+ Config.IMAGE_DIRECTORY_NAME + " directory");
                return null;
            }
        }
        // Create a media file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",Locale.getDefault()).format(new Date());
        File mediaFile;
        if (type == MEDIA_TYPE_IMAGE) {
            mediaFile = new File(mediaStorageDir.getPath() + File.separator+ "IMG_" + timeStamp + ".jpg");
        } else if (type == MEDIA_TYPE_VIDEO) {
            mediaFile = new File(mediaStorageDir.getPath() + File.separator+ "VID_" + timeStamp + ".mp4");
        } else {
            return null;
        }
        return mediaFile;
    }

    //Logout function
    private void logout(){
        //Creating an alert dialog to confirm logout
        android.support.v7.app.AlertDialog.Builder alertDialogBuilder = new android.support.v7.app.AlertDialog.Builder(this);
        alertDialogBuilder.setMessage("Are you sure you want to logout?");
        alertDialogBuilder.setPositiveButton("Yes",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface arg0, int arg1) {

                        //Getting out sharedpreferences
                        SharedPreferences preferences = getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
                        //Getting editor
                        SharedPreferences.Editor editor = preferences.edit();

                        //Puting the value false for loggedin
                        editor.putBoolean(Config.LOGGEDIN_SHARED_PREF, false);

                        //Putting blank value to email
                        editor.putString(Config.EMAIL_SHARED_PREF, "");

                        //Saving the sharedpreferences
                        editor.commit();

                        //Starting login activity
                        Intent intent = new Intent(MainActivity.this, LoginActivity.class);
                        startActivity(intent);
                    }
                });

        alertDialogBuilder.setNegativeButton("No",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface arg0, int arg1) {

                    }
                });

        //Showing the alert dialog
        android.support.v7.app.AlertDialog alertDialog = alertDialogBuilder.create();
        alertDialog.show();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.menuLogout) {
            logout();
        }
        return super.onOptionsItemSelected(item);
    }

}

我在gradle文件中添加了Ucrop库。 我的gradle应用程序模块有这个

compile 'com.github.yalantis:ucrop:2.2.1-native'

Android监视器显示此日志

07-02 00:42:22.953 1534-2050/system_process I/ActivityManager: START u0 {cmp=com.example.sathwik.uploadtrail1/com.yalantis.ucrop.UCropActivity (has extras)} from uid 10058 on display 0
07-02 00:42:22.954 1534-2050/system_process V/WindowManager: addAppToken: AppWindowToken{2e96b812 token=Token{39e8cb9d ActivityRecord{22ae1a74 u0 com.example.sathwik.uploadtrail1/com.yalantis.ucrop.UCropActivity t29}}} to stack=1 task=29 at 2
07-02 00:42:22.959 1534-1955/system_process I/ActivityManager: START u0 {cmp=com.example.sathwik.uploadtrail1/.UploadActivity (has extras)} from uid 10058 on display 0
07-02 00:42:22.962 1534-1955/system_process V/WindowManager: addAppToken: AppWindowToken{278b8499 token=Token{39cc69e0 ActivityRecord{322e0be3 u0 com.example.sathwik.uploadtrail1/.UploadActivity t29}}} to stack=1 task=29 at 3
07-02 00:42:23.578 14053-14053/com.example.sathwik.uploadtrail1 I/Choreographer: Skipped 36 frames!  The application may be doing too much work on its main thread.
07-02 00:42:23.945 1534-1836/system_process V/WindowManager: Adding window Window{14ab833f u0 com.example.sathwik.uploadtrail1/com.example.sathwik.uploadtrail1.UploadActivity} at 6 of 11 (after Window{14c5edfe u0 com.android.camera/com.android.camera.Camera})
07-02 00:42:24.332 1534-1563/system_process I/ActivityManager: Displayed com.example.sathwik.uploadtrail1/.UploadActivity: +1s293ms
07-02 00:42:24.333 1534-1558/system_process I/ActivityManager: Killing 2721:com.google.android.gms.unstable/u0a7 (adj 15): empty for 3423s
07-02 00:42:24.333 1534-1558/system_process W/libprocessgroup: failed to open /acct/uid_10007/pid_2721/cgroup.procs: No such file or directory
07-02 00:42:25.366 2376-14273/com.google.android.gms W/PlatformStatsUtil: Could not retrieve Usage & Diagnostics setting. Giving up.
07-02 00:42:25.374 1534-1836/system_process I/ActivityManager: Killing 9541:com.android.calendar/u0a18 (adj 15): empty for 2545s
07-02 00:42:25.374 1534-1836/system_process W/libprocessgroup: failed to open /acct/uid_10018/pid_9541/cgroup.procs: No such file or directory

Answer 1

UCrop工作正常，但是您以错误的方式启动它，如果为源和目标指定相同的参数，则将立即调用onActivityResult。 显然没有结果，请解决：1.指定不同的源和目标UCrop.of（fileUri，dstUri）.start（this）; 2.添加代码以处理来自uCrop的响应。 在我的教程https://youtu.be/glwM0cAUV4A中 ，onActivityResult中的代码并不完美，但是可以正常工作。