本文介绍了在故障提供CameraApplication resultInfo的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我在做一个摄像头应用程序,使用code我在互联网上发现,捕捉和农作物的图像。直到我想将图像保存在SDD卡上,做精了。它意外停止,并产生这些错误:

  15 08-06:06:58.341:E / AndroidRuntime(26462):致命异常:主要08-06 15:06:58.341:E / AndroidRuntime(26462):了java.lang.RuntimeException:不提供结果ResultInfo {谁= NULL,请求= 2,结果= -1,数据= {意向(有临时演员)}}到活动{} net.londatiga.android/net.londatiga.android.MainActivity:显示java.lang.NullPointerException08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.ActivityThread.deliverResults(ActivityThread.java:2994)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.ActivityThread.handleSendResult(ActivityThread.java:3037)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.ActivityThread.access $ 1100(ActivityThread.java:128)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1191)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.os.Handler.dispatchMessage(Handler.java:99)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.os.Looper.loop(Looper.java:137)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.ActivityThread.main(ActivityThread.java:4514)08-06 15:06:58.341:E / AndroidRuntime(26462):在java.lang.reflect.Method.invokeNative(本机方法)08-06 15:06:58.341:E / AndroidRuntime(26462):在java.lang.reflect.Method.invoke(Method.java:511)08-06 15:06:58.341:E / AndroidRuntime(26462):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:993)08-06 15:06:58.341:E / AndroidRuntime(26462):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)08-06 15:06:58.341:E / AndroidRuntime(26462):在dalvik.system.NativeStart.main(本机方法)08-06 15:06:58.341:E / AndroidRuntime(26462):致:显示java.lang.NullPointerException08-06 15:06:58.341:E / AndroidRuntime(26462):在java.io.File.fixSlashes(File.java:185)。08-06 15:06:58.341:E / AndroidRuntime(26462):在java.io.File中的<&初始化GT;(File.java:134)08-06 15:06:58.341:E / AndroidRuntime(26462):在net.londatiga.android.MainActivity.saveBitmapToFile(MainActivity.java:128)08-06 15:06:58.341:E / AndroidRuntime(26462):在net.londatiga.android.MainActivity.onActivityResult(MainActivity.java:112)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.Activity.dispatchActivityResult(Activity.java:4746)08-06 15:06:58.341:E / AndroidRuntime(26462):在android.app.ActivityThread.deliverResults(ActivityThread.java:2990)08-06 15:06:58.341:E / AndroidRuntime(26462):... 11个


总code:

 包net.londatiga.android;进口的java.io.File;
进口java.io.FileOutputStream中;
进口的java.util.ArrayList;
进口的java.util.List;进口android.app.Activity;
进口android.app.AlertDialog;
进口android.content.ActivityNotFoundException;
进口android.content.ComponentName;
进口android.content.DialogInterface;
进口android.content.Intent;
进口android.content.pm.ResolveInfo;
进口android.graphics.Bitmap;
进口android.graphics.Bitmap.Com pressFormat;
进口android.graphics.Path;
进口android.net.Uri;
进口android.os.Bundle;
进口android.os.Environment;
进口android.provider.MediaStore;
进口android.view.View;
进口android.widget.ArrayAdapter;
进口android.widget.Button;
进口android.widget.ImageView;
进口android.widget.Toast;公共类MainActivity延伸活动{
    私人乌里mImageCaptureUri;
    私人ImageView的mImageView;
    私人字符串路径;
    私人位图位图;    私有静态最终诠释PICK_FROM_CAMERA = 1;
    私有静态最终诠释CROP_FROM_CAMERA = 2;
    私有静态最终诠释PICK_FROM_FILE = 3;
    @覆盖
    公共无效的onCreate(捆绑savedInstanceState){
        super.onCreate(savedInstanceState);        的setContentView(R.layout.main);        最终的String []项目=新的String [] {从相机拍摄,从库中选择};
        ArrayAdapter<串GT;适配器=新ArrayAdapter<串GT; (这一点,android.R.layout.select_dialog_item,项目);
        AlertDialog.Builder建设者=新AlertDialog.Builder(本);        builder.setTitle(选择图片);
        builder.setAdapter(适配器,新DialogInterface.OnClickListener(){
            公共无效的onClick(DialogInterface对话,诠释项){//从镜头
                如果(项目== 0){
                    意向意图=新意图(MediaStore.ACTION_IM​​AGE_CAPTURE);                    mImageCaptureUri = Uri.fromFile(新文件(Environment.getExternalStorageDirectory()
                                       tmp_avatar_+将String.valueOf(System.currentTimeMillis的())+.JPG));                    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,mImageCaptureUri);                    尝试{
                        intent.putExtra(回归数据,真正的);                        startActivityForResult(意向,PICK_FROM_CAMERA);
                    }赶上(ActivityNotFoundException E){
                        e.printStackTrace();
                    }
                }其他{//从文件中挑选
                    意向意图=新的Intent();                    intent.setType(图像/ *);
                    intent.setAction(Intent.ACTION_GET_CONTENT);                    startActivityForResult(Intent.createChooser(原意,使用完整的行动),PICK_FROM_FILE);
                }
            }
        });        最后AlertDialog对话框= builder.create();        Button按钮=(按钮)findViewById(R.id.btn_crop);
        mImageView =(ImageView的)findViewById(R.id.iv_photo);        button.setOnClickListener(新View.OnClickListener(){
            公共无效的onClick(视图v){
                dialog.show();
            }
        });
    }    @覆盖
    保护无效的onActivityResult(INT申请code,INT结果code,意图数据){
        如果(结果code = RESULT_OK!)回报;        开关(要求code){
            案例PICK_FROM_CAMERA:
                doCrop();                打破;            案例PICK_FROM_FILE:
                mImageCaptureUri = data.getData();                doCrop();                打破;            案例CROP_FROM_CAMERA:
                捆绑额外= data.getExtras();                如果(临时演员!= NULL){
                    位图照片= extras.getParcelable(数据);
                    saveBitmapToFile(/ SD卡/ cropped_img.jpg,照片);                    mImageView.setImageBitmap(照片);
                }                文件f =新的文件(mImageCaptureUri.getPath());                如果(f.exists())f.delete();                打破;
//
        }
    }    私人布尔saveBitmapToFile(串串,位图图片){        档案文件=新的文件(路径);
        布尔解析度= FALSE;如果(!file.exists())
        {
        尝试
        {
        FOS的FileOutputStream =新的FileOutputStream(文件);
        RES = bitmap.com preSS(比较pressFormat.JPEG,100,FOS); fos.close();
        }赶上(例外五)
        {}
        }返回水库;
        }//}    私人无效doCrop(){
        最终的ArrayList< CropOption> cropOptions =新的ArrayList< CropOption>();        意向意图=新意图(com.android.camera.action.CROP);
        intent.setType(图像/ *);        清单< ResolveInfo> 。名单= getPackageManager()queryIntentActivities(意向,0);        INT大小=则为list.size();        如果(大小== 0){
            Toast.makeText(这一点,找不到图像裁剪的应用程序,Toast.LENGTH_SHORT).show();            返回;
        }其他{
            intent.setData(mImageCaptureUri);            intent.putExtra(outputX,200);
            intent.putExtra(outputY,200);
            intent.putExtra(aspectX,1);
            intent.putExtra(aspectY,1);
            intent.putExtra(规模化,真正的);
            intent.putExtra(回归数据,真正的);            如果(大小== 1){
                意图I =新意图(意向);
                ResolveInfo解析度= list.get(0);                i.setComponent(新组件名(res.activityInfo.packageName,res.activityInfo.name));                startActivityForResult(ⅰ,CROP_FROM_CAMERA);
            }其他{
                对于(ResolveInfo RES:名单){
                    最后CropOption共同=新CropOption();                    co.title = getPackageManager()getApplicationLabel(res.activityInfo.applicationInfo)。
                    co.icon = getPackageManager()getApplicationIcon(res.activityInfo.applicationInfo)。
                    co.appIntent =新意图(意向);                    co.appIntent.setComponent(新组件名(res.activityInfo.packageName,res.activityInfo.name));                    cropOptions.add(共);
                }                CropOptionAdapter适配器=新CropOptionAdapter(getApplicationContext(),cropOptions);                AlertDialog.Builder建设者=新AlertDialog.Builder(本);
                builder.setTitle(选择裁剪应用程序);
                builder.setAdapter(适配器,新DialogInterface.OnClickListener(){
                    公共无效的onClick(DialogInterface对话,诠释项){
                        startActivityForResult(cropOptions.get(项目).appIntent,CROP_FROM_CAMERA);
                    }
                });                builder.setOnCancelListener(新DialogInterface.OnCancelListener(){
                    公共无效onCancel(DialogInterface对话){                        如果(mImageCaptureUri!= NULL){
                            。getContentResolver()删除(mImageCaptureUri,NULL,NULL);
                            mImageCaptureUri = NULL;
                        }
                    }
                });                AlertDialog警报= builder.create();                alert.show();
            }
        }
    }
}


解决方案

您也越来越NPE。看到这一行bitmap.com preSS(比较pressFormat.JPEG,100,FOS); fos.close(); 。被分配了一个y值的位图的变量。我没有看到它在你的code。 instread尝试photo..com preSS(比较pressFormat.JPEG,100,FOS);

有在code许多错误。
上面提到的就是其中之一。

我刚才看到你所得到的文件的文件=新的文件(路径)异常;
没有定义这个变量路径。与你的路径值初始化。

I'm doing a camera application, using the code I found on the internet, that captures and crops images. It is doing fine up until I want to save the image in the SDd card. It stops unexpectedly and produces these errors:

08-06 15:06:58.341: E/AndroidRuntime(26462): FATAL EXCEPTION: main

08-06 15:06:58.341: E/AndroidRuntime(26462): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=2, result=-1, data=Intent { (has extras) }} to activity {net.londatiga.android/net.londatiga.android.MainActivity}: java.lang.NullPointerException

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.ActivityThread.deliverResults(ActivityThread.java:2994)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3037)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.ActivityThread.access$1100(ActivityThread.java:128)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1191)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.os.Handler.dispatchMessage(Handler.java:99)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.os.Looper.loop(Looper.java:137)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.ActivityThread.main(ActivityThread.java:4514)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at java.lang.reflect.Method.invokeNative(Native Method)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at java.lang.reflect.Method.invoke(Method.java:511)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at dalvik.system.NativeStart.main(Native Method)

08-06 15:06:58.341: E/AndroidRuntime(26462): Caused by: java.lang.NullPointerException

08-06 15:06:58.341: E/AndroidRuntime(26462):    at java.io.File.fixSlashes(File.java:185)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at java.io.File.<init>(File.java:134)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at net.londatiga.android.MainActivity.saveBitmapToFile(MainActivity.java:128)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at net.londatiga.android.MainActivity.onActivityResult(MainActivity.java:112)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.Activity.dispatchActivityResult(Activity.java:4746)

08-06 15:06:58.341: E/AndroidRuntime(26462):    at android.app.ActivityThread.deliverResults(ActivityThread.java:2990)

08-06 15:06:58.341: E/AndroidRuntime(26462):    ... 11 more


THE CODE:

package net.londatiga.android;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.Path;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends Activity {
    private Uri mImageCaptureUri;
    private ImageView mImageView;
    private String path;
    private Bitmap bitmap;

    private static final int PICK_FROM_CAMERA = 1;
    private static final int CROP_FROM_CAMERA = 2;
    private static final int PICK_FROM_FILE = 3;


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        final String [] items           = new String [] {"Take from camera", "Select from gallery"};
        ArrayAdapter<String> adapter    = new ArrayAdapter<String> (this, android.R.layout.select_dialog_item,items);
        AlertDialog.Builder builder     = new AlertDialog.Builder(this);

        builder.setTitle("Select Image");
        builder.setAdapter( adapter, new DialogInterface.OnClickListener() {
            public void onClick( DialogInterface dialog, int item ) { //pick from camera
                if (item == 0) {
                    Intent intent    = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

                    mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),
                                       "tmp_avatar_" + String.valueOf(System.currentTimeMillis()) + ".jpg"));

                    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);

                    try {
                        intent.putExtra("return-data", true);

                        startActivityForResult(intent, PICK_FROM_CAMERA);
                    } catch (ActivityNotFoundException e) {
                        e.printStackTrace();
                    }
                } else { //pick from file
                    Intent intent = new Intent();

                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);

                    startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE);
                }
            }
        } );

        final AlertDialog dialog = builder.create();

        Button button   = (Button) findViewById(R.id.btn_crop);
        mImageView      = (ImageView) findViewById(R.id.iv_photo);

        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                dialog.show();
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode != RESULT_OK) return;

        switch (requestCode) {
            case PICK_FROM_CAMERA:
                doCrop();

                break;

            case PICK_FROM_FILE:
                mImageCaptureUri = data.getData();

                doCrop();

                break;

            case CROP_FROM_CAMERA:
                Bundle extras = data.getExtras();

                if (extras != null) {
                    Bitmap photo = extras.getParcelable("data");
                    saveBitmapToFile("/sdcard/cropped_img.jpg", photo);

                    mImageView.setImageBitmap(photo);
                }

                File f = new File(mImageCaptureUri.getPath());

                if (f.exists()) f.delete();

                break;
//
        }
    }

    private boolean saveBitmapToFile(String string, Bitmap photo) {

        File file = new File(path);
        boolean res = false; if (!file.exists())
        {
        try
        {
        FileOutputStream fos = new FileOutputStream(file);
        res = bitmap.compress(CompressFormat.JPEG, 100, fos); fos.close();
        } catch (Exception e)
        {   }
        } return res;
        }

//  }

    private void doCrop() {
        final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();

        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setType("image/*");

        List<ResolveInfo> list = getPackageManager().queryIntentActivities( intent, 0 );

        int size = list.size();

        if (size == 0) {
            Toast.makeText(this, "Can not find image crop app", Toast.LENGTH_SHORT).show();

            return;
        } else {
            intent.setData(mImageCaptureUri);

            intent.putExtra("outputX", 200);
            intent.putExtra("outputY", 200);
            intent.putExtra("aspectX", 1);
            intent.putExtra("aspectY", 1);
            intent.putExtra("scale", true);
            intent.putExtra("return-data", true);

            if (size == 1) {
                Intent i        = new Intent(intent);
                ResolveInfo res = list.get(0);

                i.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));

                startActivityForResult(i, CROP_FROM_CAMERA);
            } else {
                for (ResolveInfo res : list) {
                    final CropOption co = new CropOption();

                    co.title    = getPackageManager().getApplicationLabel(res.activityInfo.applicationInfo);
                    co.icon     = getPackageManager().getApplicationIcon(res.activityInfo.applicationInfo);
                    co.appIntent= new Intent(intent);

                    co.appIntent.setComponent( new ComponentName(res.activityInfo.packageName, res.activityInfo.name));

                    cropOptions.add(co);
                }

                CropOptionAdapter adapter = new CropOptionAdapter(getApplicationContext(), cropOptions);

                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setTitle("Choose Crop App");
                builder.setAdapter( adapter, new DialogInterface.OnClickListener() {
                    public void onClick( DialogInterface dialog, int item ) {
                        startActivityForResult( cropOptions.get(item).appIntent, CROP_FROM_CAMERA);
                    }
                });

                builder.setOnCancelListener( new DialogInterface.OnCancelListener() {
                    public void onCancel( DialogInterface dialog ) {

                        if (mImageCaptureUri != null ) {
                            getContentResolver().delete(mImageCaptureUri, null, null );
                            mImageCaptureUri = null;
                        }
                    }
                } );

                AlertDialog alert = builder.create();

                alert.show();
            }
        }
    }
}
解决方案

You are getting NPE . See this line bitmap.compress(CompressFormat.JPEG, 100, fos); fos.close(); . is bitmap variable assigned an y value. I dont see it in your code. instread try photo..compress(CompressFormat.JPEG, 100, fos);

There are many bugs in your code.Above mentioned is one.

I just saw that you are getting an exception at File file = new File(path);this variable path is not defined. Initialise it with your path value.

这篇关于在故障提供CameraApplication resultInfo的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

09-02 20:11