出现错误时捕获图像 [英] Get Error when capture image

查看：109 发布时间：2015/12/3 18:07:39 android android-intent android-camera

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问题描述

我想用相机捕捉到的图像，并希望映像路径。

我尝试以下code，但我得到的错误。（我请点击此链接<一个href="http://stackoverflow.com/questions/4184951/get-path-of-image-from-action-image-capture-intent">Get图像从ACTION_IMAGE_CAPTURE意图路径）

下面是我的code。

MainActivity.java

 公共类MainActivity延伸活动{
 私有静态最终诠释CAMERA_REQUEST = 1888;
    私人ImageView的ImageView的;
    私人乌里mCapturedImageURI;

    @覆盖
    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_main）;
        this.imageView =（ImageView的）this.findViewById（R.id.imageView1）;
        按钮photoButton =（按钮）this.findViewById（R.id.button1）;
        photoButton.setOnClickListener（新View.OnClickListener（）{



            @覆盖
            公共无效的onClick（视图v）{


                 字符串文件名=temp.jpg;
                 ContentValues值=新ContentValues（）;
                 values.put（MediaStore.Images.Media.TITLE，文件名）;
                 mCapturedImageURI = getContentResolver（）插入（MediaStore.Images.Media.EXTERNAL_CONTENT_URI，值）。

                 意向意图=新的意图（MediaStore.ACTION_IMAGE_CAPTURE）;
                 intent.putExtra（MediaStore.EXTRA_OUTPUT，mCapturedImageURI）;
                 startActivityForResult（意向，CAMERA_REQUEST）;
            }
        }）;
    }

    保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
        如果（要求code == CAMERA_REQUEST和放大器;＆安培;结果code == RESULT_OK）{

             的String []投影= {MediaStore.Images.Media.DATA};
             光标光标= managedQuery（mCapturedImageURI，投影，NULL，NULL，NULL）;
             INT column_index_data = cursor.getColumnIndexOrThrow（MediaStore.Images.Media.DATA）;
             cursor.moveToFirst（）;
             字符串capturedImageFilePath = cursor.getString（column_index_data）;

             Toast.makeText（getApplicationContext（），capturedImageFilePath.toString（），Toast.LENGTH_LONG）.show（）;

        }
    }
}

activity_main.xml

 ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT; LinearLayout中的xmlns：机器人=http://schemas.android.com/apk/res/android
    机器人：layout_width =FILL_PARENT
    机器人：layout_height =FILL_PARENT
    机器人：方向=垂直＆GT;

    ＆LT;按钮
        机器人：ID =@ + ID /按钮1
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT
        机器人：文本=照片＆GT;
    ＆LT; /按钮＆GT;

    ＆LT; ImageView的
        机器人：ID =@ + ID / imageView1
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT
        机器人：SRC =@可绘制/ ic_launcher＆GT;
    ＆LT; / ImageView的＆GT;

＆LT; / LinearLayout中＆GT;

AndroidManifest.xml中

 ＆LT;使用特征的android：NAME =android.hardware.camera＆GT;＆LT; /使用特征＆GT;
＆LT;使用-权限的Android：名称=android.permission.WRITE_EXTERNAL_STORAGE/＆GT;

错误

 了java.lang.RuntimeException：无法恢复活动{com.example.cameraupload / com.example.cameraupload.MainActivity}：java.lang.RuntimeException的：不提供结果ResultInfo {谁= NULL，请求= 1888，结果= -1，数据= NULL}到活动{com.example.cameraupload / com.example.cameraupload.MainActivity}：显示java.lang.NullPointerException

解决方案

最后，我得到了答案。

photoButton.setOnClickListener（新OnClickListener（）{

 公共无效的onClick（视图v）{

           档案文件=新的文件（Environment.getExternalStorageDirectory（）+/ test1.jpg）;
            乌里outputFileUri = Uri.fromFile（文件）;
            意向意图=新的意图（android.provider.MediaStore.ACTION_IMAGE_CAPTURE）;
            intent.putExtra（MediaStore.EXTRA_OUTPUT，outputFileUri）;
            startActivityForResult（意向，0）;

        }
    }）;



保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
        Log.i（MakeMachine，请求code：+请求code +，因此code：+导致code）;

                        档案文件=新的文件（Environment.getExternalStorageDirectory（）+/ test1.jpg）;
                        如果（file.exists（））{
                            BitmapFactory.Options选项=新BitmapFactory.Options（）;
                            options.inSampleSize = 4;
                            picFileName = Environment.getExternalStorageDirectory（）+/ test.jpg放在;
                            Toast.makeText（getApplicationContext（），picFileName，Toast.LENGTH_LONG）.show（）;
                            点阵位图= BitmapFactory.de codeFILE（picFileName，期权）;
                            imageView.setImageBitmap（位）;
                            //imageView.setVisibility(View.VISIBLE）;
                        }


    }

I want to capture image using camera and want image path.

I try following code but I get Error. (I follow this link Get Path of image from ACTION_IMAGE_CAPTURE intent)

Here is my code.

MainActivity.java

public class MainActivity  extends Activity {
 private static final int CAMERA_REQUEST = 1888; 
    private ImageView imageView;
    private Uri mCapturedImageURI;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        this.imageView = (ImageView)this.findViewById(R.id.imageView1);
        Button photoButton = (Button) this.findViewById(R.id.button1);
        photoButton.setOnClickListener(new View.OnClickListener() {



            @Override
            public void onClick(View v) {


                 String fileName = "temp.jpg";  
                 ContentValues values = new ContentValues();  
                 values.put(MediaStore.Images.Media.TITLE, fileName);  
                 mCapturedImageURI = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);  

                 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
                 intent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);  
                 startActivityForResult(intent, CAMERA_REQUEST);
            }
        });
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
        if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {  

             String[] projection = { MediaStore.Images.Media.DATA}; 
             Cursor cursor = managedQuery(mCapturedImageURI, projection, null, null, null); 
             int column_index_data = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
             cursor.moveToFirst(); 
             String capturedImageFilePath = cursor.getString(column_index_data);

             Toast.makeText(getApplicationContext(), capturedImageFilePath.toString(), Toast.LENGTH_LONG).show();

        }  
    } 
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="photo" >
    </Button>

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher" >
    </ImageView>

</LinearLayout>

AndroidManifest.xml

<uses-feature android:name="android.hardware.camera"></uses-feature>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

Error

java.lang.RuntimeException: Unable to resume activity {com.example.cameraupload/com.example.cameraupload.MainActivity}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1888, result=-1, data=null} to activity {com.example.cameraupload/com.example.cameraupload.MainActivity}: java.lang.NullPointerException

解决方案

Finally I got Ans.

photoButton.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {

           File file = new File(Environment.getExternalStorageDirectory()+"/test1.jpg");
            Uri outputFileUri = Uri.fromFile(file);
            Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
            startActivityForResult(intent, 0);

        }
    });



protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.i("MakeMachine", "requestCode:"+requestCode + ",resultCode: " + resultCode);

                        File file = new File(Environment.getExternalStorageDirectory()+"/test1.jpg");
                        if(file.exists()){
                            BitmapFactory.Options options = new BitmapFactory.Options();
                            options.inSampleSize = 4;
                            picFileName=Environment.getExternalStorageDirectory()+"/test.jpg";
                            Toast.makeText(getApplicationContext(), picFileName, Toast.LENGTH_LONG).show();
                            Bitmap bitmap = BitmapFactory.decodeFile(picFileName, options);
                            imageView.setImageBitmap(bitmap);
                            //imageView.setVisibility(View.VISIBLE);
                        }


    }

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