logcat文件显示错误

时间：2017-04-12 20:33:17

标签： java android 

package com.example.ishan.complainbox;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.widget.AppCompatImageButton;
import android.view.View;
import android.widget.EditText;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.Toast;
import android.support.v7.widget.AppCompatImageView;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;  
import android.widget.TextView;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import android.graphics.drawable.BitmapDrawable;


public class Crime extends MainActivity implements 
View.OnClickListener,LocationListener {

GoogleMap googleMap;
private int REQUEST_CAMERA = 0, SELECT_FILE = 1;
private Button btnSelect;
private ImageView imgView,ivImage;
private String userChosenTask;
EditText street, city, pincode, detail;
Button btnsave;
crimeDBHandler dbHandler;

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    if (!isGooglePlayServicesAvailable()) {
        finish();
        setContentView(R.layout.activity_crime);
        // Get References of Views
        street = (EditText) findViewById(R.id.str);
        city = (EditText) findViewById(R.id.city);
        pincode = (EditText) findViewById(R.id.pin);
        detail = (EditText) findViewById(R.id.detail);
        imgView = (ImageView)findViewById(R.id.imgView);
        btnsave = (Button) findViewById(R.id.save);
        btnSelect = (Button) findViewById(R.id.uploadpic);
        dbHandler = new crimeDBHandler(this, null, null, 1);

        btnSelect.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                String strt = street.getText().toString();
                String cty = city.getText().toString();
                String pin = pincode.getText().toString();
                String det = detail.getText().toString();
                Bitmap bitmap = 
  ((BitmapDrawable)imageView.getDrawable()).getBitmap();
                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
                byte[] imageInByte = baos.toByteArray();
                btnsave = (Button) findViewById(R.id.save);
                selectImage();
                dbHandler.insertEntry(strt, cty, pin, det,imageInByte);
                Toast.makeText(getApplicationContext(), "Complaint 
Successfully Filed ", Toast.LENGTH_LONG).show();
            }

        });
        ivImage = (ImageView) findViewById(R.id.img);
    }
  }


    @Override
    public void onRequestPermissionsResult ( int requestCode, String[] 
 permissions,
    int[] grantResults){
        switch (requestCode) {
            case Utility.MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE:
                if (grantResults.length > 0 && grantResults[0] == 
 PackageManager.PERMISSION_GRANTED) {
                    if (userChosenTask.equals("Take Photo"))
                        cameraIntent();
                    else if (userChosenTask.equals("Choose from Library"))
                        galleryIntent();
                } else
                    break;
        }
    }



  private boolean isGooglePlayServicesAvailable() {
    int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (ConnectionResult.SUCCESS == status) {
        return true;
    } else {
        GooglePlayServicesUtil.getErrorDialog(status, this, 0).show();
        return false;
    }
 } 


  private void selectImage() {
    final CharSequence[] items = {"Take Photo", "Choose from Library",
           "Cancel" };
   AlertDialog.Builder builder = new AlertDialog.Builder(Crime.this);
    builder.setTitle("Add Photo!");
    builder.setItems(items, new DialogInterface.OnClickListener() {

        @Override

        public void onClick(DialogInterface dialog, int item) {
            boolean result=userChosenTask.checkPermission(Crime.this);
            if (items[item].equals("Take Photo"))
           {
               userChosenTask ="Take Photo";
                if(result)
                    cameraIntent();
            }
            else if (items[item].equals("Choose from Library"))
            {
                userChosenTask ="Choose from Library";
                if(result)
                    galleryIntent();
           }
            else if (items[item].equals("Cancel"))
            {
                dialog.dismiss();

            }
        }

     });
     builder.show();
  }
  private void galleryIntent()
  {
    Intent intent = new Intent();
    intent.setType("image/*video/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent, "Select 
 File"),SELECT_FILE);
 }
  private void cameraIntent()
   {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(intent, REQUEST_CAMERA);
 }

  @Override
   public void onActivityResult(int requestCode, int resultCode, Intent 
 data)
  {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == Activity.RESULT_OK) {
        if (requestCode == SELECT_FILE)
            onSelectFromGalleryResult(data);
        else if (requestCode == REQUEST_CAMERA)
            onCaptureImageResult(data);
    }
  }
   private void onCaptureImageResult(Intent data) {
    Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
    File destination = new 
  File(Environment.getExternalStorageDirectory(),System.currentTimeMillis() 
  + ".jpg");
     FileOutputStream fo;
     try {
        destination.createNewFile();
        fo = new FileOutputStream(destination);
        fo.write(bytes.toByteArray());
        fo.close();
     }
     catch (FileNotFoundException e)
     {
        e.printStackTrace();
      }
      catch (IOException e)
      {
        e.printStackTrace();
      }

     ivImage.setImageBitmap(thumbnail);
   }

   @SuppressWarnings("deprecation")
   private void onSelectFromGalleryResult(Intent data) {
    Bitmap bm=null;
    if (data != null) {
        try {
          bm = 
          MediaStore.Images.Media.getBitmap
            (getApplicationContext().getContentResolver(), data.getData());
         }
          catch (IOException e) {
            e.printStackTrace();
         }
      }

       ivImage.setImageBitmap(bm);
      }

    @Override
    public void onLocationChanged(Location location) {
    TextView locationTv = (TextView) findViewById(R.id.latlongLocation);
    double latitude = location.getLatitude();
    double longitude = location.getLongitude();
    LatLng latLng = new LatLng(latitude, longitude);
    googleMap.addMarker(new MarkerOptions().position(latLng));
    googleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
    googleMap.animateCamera(CameraUpdateFactory.zoomTo(15));
    locationTv.setText("Latitude:" + latitude + ", Longitude:" + longitude);


   }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) 
    {

    }

    @Override
    public void onProviderEnabled(String provider) {

    }

    @Override
    public void onProviderDisabled(String provider) {

    } 
}

这是我的android项目的一个活动类，此活动依赖于另一个实用程序类....如下所述：

声明Bitmap bitmap = ((BitmapDrawable)imageView.getDrawable()).getBitmap();在＆＃34; imageView＆＃34;中显示错误并且语句boolean result=userChosenTask.checkPermission(Crime.this);在＆＃34; checkPermission ＆＃34; ...中显示错误但我不明白为什么......因为checkPermission已在实用班...... 

package com.example.ishan.complainbox;

/**
 * Created by ishan on 11/04/2017. 
*/
import android.os.Build;
import android.content.Context;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AlertDialog;
import android.Manifest;
import android.content.pm.PackageManager;
import android.content.DialogInterface;
 public class Utility {
 public static final int MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 123;

@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean checkPermission(final Context context)
 {
 int currentAPIVersion = Build.VERSION.SDK_INT;
 if(currentAPIVersion>=android.os.Build.VERSION_CODES.M)
  {
    if (ContextCompat.checkSelfPermission(context, 
 Manifest.permission.READ_EXTERNAL_STORAGE) != 
  PackageManager.PERMISSION_GRANTED)
    {
        if 
(ActivityCompat.shouldShowRequestPermissionRationale((MainActivity) context, 
Manifest.permission.READ_EXTERNAL_STORAGE))
        {
            AlertDialog.Builder alertBuilder = new 
AlertDialog.Builder(context);
            alertBuilder.setCancelable(true);
            alertBuilder.setTitle("Permission necessary");
            alertBuilder.setMessage("External storage permission is 
necessary");
            alertBuilder.setPositiveButton(android.R.string.yes, new 
DialogInterface.OnClickListener() {
                @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
                public void onClick(DialogInterface dialog, int which) {
                    ActivityCompat.requestPermissions((MainActivity) 
context, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 
  MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
                }
            });
            AlertDialog alert = alertBuilder.create();
            alert.show();

        } else
            {
            ActivityCompat.requestPermissions((MainActivity) context, 
  new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 
  MY_PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
        }
        return false;
    } else {
        return true;
    }
  } else
    {
    return true;
 }
 }
 }

1 个答案:

答案 0 :(得分：0)

在您的manifests.xml中，您需要包含权限：

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

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