Question

在我的应用程序中，我试图通过调出相机来添加照片，以便用户可以添加他们想要的照片。拍摄照片后，会出现一个自定义对话框，以确保这是他们想要的照片。截至照片拍摄并接受后，相机停止。这是我的代码（位图在所有内容之外初始化）和错误......

 public void pictureDialog()
    {
        Button picAdd;
        Button picCancel;
        ImageView imageView;
        final Dialog customDialog = new Dialog(this);

        picAdd = (Button) findViewById(R.id.picAdd);
        picCancel = (Button) findViewById(R.id.picCancel);
        imageView = (ImageView) findViewById(R.id.imageView);

        customDialog.setContentView(R.layout.picture);
        customDialog.setTitle("Add Picture");
        if (cameraImage != null)
        {
            imageView.setImageBitmap(cameraImage);

            picAdd.setOnClickListener(new View.OnClickListener()
            {
                @Override
                public void onClick(View v)
                {

                }
            });
            picCancel.setOnClickListener(new View.OnClickListener()
            {
                @Override
                public void onClick(View v)
                {

                }
            });
            customDialog.show();
        }

    }

    public void camera()
    {
        Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(cameraIntent, CAMERA_CODE);
    }

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

        if (resultCode == RESULT_OK)
        {
            if (requestCode == CAMERA_CODE)
            {
                cameraImage = (Bitmap) data.getExtras().get("data");
                pictureDialog();
            }
        }
    }

错误

07-24 12:24:38.393  17706-17706/com.customledsupply.ledaudit E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.customledsupply.ledaudit, PID: 17706
    java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=10, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.customledsupply.ledaudit/com.customledsupply.ledaudit.FixtureDescription}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageBitmap(android.graphics.Bitmap)' on a null object reference
            at android.app.ActivityThread.deliverResults(ActivityThread.java:3577)
            at android.app.ActivityThread.handleSendResult(ActivityThread.java:3620)
            at android.app.ActivityThread.access$1300(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1352)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageBitmap(android.graphics.Bitmap)' on a null object reference
            at com.customledsupply.ledaudit.FixtureDescription.pictureDialog(FixtureDescription.java:126)
            at com.customledsupply.ledaudit.FixtureDescription.onActivityResult(FixtureDescription.java:164)
            at android.app.Activity.dispatchActivityResult(Activity.java:6192)
            at android.app.ActivityThread.deliverResults(ActivityThread.java:3573)
            at android.app.ActivityThread.handleSendResult(ActivityThread.java:3620)
            at android.app.ActivityThread.access$1300(ActivityThread.java:151)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1352)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Answer 1

问题是，Camera Intent返回NULL。你必须检查这个： onActivityResult returned from a camera, Intent null

Android文档中未对此进行描述。

相机操作后不显示ImageView对话框

1 个答案: