从相机意图获取图像路径

Question

在我的应用程序中可以选择从相机捕获图像.但是从相机获取图像存在问题.当我使用ACTION_IMAGE_CAPTURE它时它返回null数据.请帮我从相机意图获取图像路径

错误日志:

07-04 11:22:36.902: E/AndroidRuntime(8329): FATAL EXCEPTION: main
07-04 11:22:36.902: E/AndroidRuntime(8329): java.lang.RuntimeException: Unable to resume activity {com.pausefablogin/com.pausefablogin.AddPOI}: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=111, result=-1, data=null} to activity {com.pausefablogin/com.pausefablogin.AddPOI}: java.lang.NullPointerException
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2124)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2139)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1672)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:2836)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.access$1600(ActivityThread.java:117)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.os.Looper.loop(Looper.java:130)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.main(ActivityThread.java:3687)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at java.lang.reflect.Method.invokeNative(Native Method)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at java.lang.reflect.Method.invoke(Method.java:507)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at dalvik.system.NativeStart.main(Native Method)
07-04 11:22:36.902: E/AndroidRuntime(8329): Caused by: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=111, result=-1, data=null} to activity {com.pausefablogin/com.pausefablogin.AddPOI}: java.lang.NullPointerException
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2536)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2111)
07-04 11:22:36.902: E/AndroidRuntime(8329):     ... 13 more
07-04 11:22:36.902: E/AndroidRuntime(8329): Caused by: java.lang.NullPointerException
07-04 11:22:36.902: E/AndroidRuntime(8329):     at com.pausefablogin.AddPOI.onActivityResult(AddPOI.java:281)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.Activity.dispatchActivityResult(Activity.java:3908)
07-04 11:22:36.902: E/AndroidRuntime(8329):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2532)
07-04 11:22:36.902: E/AndroidRuntime(8329):     ... 14 more

提前致谢

Answer 1

试试这个

 Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(i , 0);          

并称之为

@Override
protected void onActivityResult(int requestCode, int resultCode,
        Intent resultData) {
    super.onActivityResult(requestCode, resultCode, resultData);

        if (resultData != null) {

        String[] projection = { MediaStore.Images.Media.DATA };
                Cursor cursor = managedQuery(
                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                        projection, null, null, null);
                int column_index_data = cursor
                        .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                cursor.moveToLast();

                String imagePath = cursor.getString(column_index_data);
                Bitmap bitmapImage = BitmapFactory.decodeFile(imagePath );
                imageView.setImageBitmap(bitmapImage );

            }

并使用你想要的prrmission

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

Answer 2

我遇到了同样的问题,以下内容对我有用:

@Override
public void onClick(View v) {
        Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
                }
        });
    }

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//super.onActivityResult(requestCode, resultCode, data);
    if(requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE && resultCode == RESULT_OK) {
        final ContentResolver cr = getContentResolver();
        final String[] p1 = new String[] {
            MediaStore.Images.ImageColumns._ID,
            MediaStore.Images.ImageColumns.DATE_TAKEN
                };
    Cursor c1 = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, p1, null, null, p1[1] + " DESC");
        if ( c1.moveToFirst() ) {
        String uristringpic = "content://media/external/images/media/" +c1.getInt(0);
         Uri uri = Uri.parse(uristringpic);
            try {
              Bitmap bm = android.provider.MediaStore.Images.Media.getBitmap(cr, uri);

希望这有助于我知道它是多么令人沮丧.

Answer 3

如果成功实现代码，您将获得捕获的图像，然后您可以手动保存它以供将来使用。

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
        if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {  
            Bitmap photo = (Bitmap) data.getExtras().get("data"); 
            videoView.setVisibility(View.INVISIBLE);
            imageView.setVisibility(View.VISIBLE);
            imageView.setImageBitmap(photo);
        }
    }