java - Android 中如何一键打开相机？

Question

我在 Android 中创建了相机应用程序。我创建了一项 Activity ，同一 Activity 中包含 3 个按钮和 3 个 ImageView 。当我必须单击第一个按钮时，该快照将显示在第一个 ImageView 中，然后当我单击第二个按钮时，该快照将显示在第二个 ImageView 中，与第三个按钮相同。

当我运行我的应用程序时，相机完全打开并拍摄快照，但它也无法像其他按钮一样显示在 ImageView 中。这是我的代码。

这是我的 Activity 代码

public class Take_Snap_Page extends Activity
{
    ImageView imgPersonalSnap;
    ImageView imgAddressProofSnap;
    ImageView imgPanCardProofSnap;
    ImageView imgHideBitmap;

    Button btnPersonal ;
    Button btnAddress;
    Button btnPanCard;
    Button btnSubmitSnap;

    Bitmap bp;
    Bitmap bitmap ;

    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.take_snap);

        imgPersonalSnap = (ImageView)findViewById(R.id.imagesPersonnalSnap);
        imgAddressProofSnap = (ImageView)findViewById(R.id.imageAddressProofSnap);
        imgPanCardProofSnap = (ImageView)findViewById(R.id.imagePanCardproofSnap);
        imgHideBitmap = (ImageView)findViewById(R.id.imgHide);



        btnPersonal = (Button)findViewById(R.id.buttonCapture_Personal_Snap);
        btnPersonal.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                open();

                imgPersonalSnap.setImageBitmap(bitmap);

            }
        });




        btnAddress = (Button)findViewById(R.id.buttonCapture_AddressSnap);
        btnAddress.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                open();

            }
        });



        btnPanCard = (Button)findViewById(R.id.buttonCapture_PanCardSnap);
        btnPanCard.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                open();

            }
        });

    }


    public void open() {
        Intent intent = new Intent(
                android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, 0);
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == 0)
        {
                if (resultCode == RESULT_OK && data !=null )
                {
                    // ... now let's see use the picture at data/
                    bp = (Bitmap) data.getExtras().get("data");
                    imgHideBitmap.setImageBitmap(bp);
                    BitmapDrawable drawable = (BitmapDrawable) imgHideBitmap.getDrawable();
                    bitmap = drawable.getBitmap();


                }
        }
    }
}

Answer 1

尝试使用requestCode，如下所示。

btnAddress.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            open(0);

        }
    });

btnAddress.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            open(1);

        }
    });

btnPanCard.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            open(2);

        }
    });

和

public void open(int requestCode) {
    Intent intent = new Intent(
            android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(intent, requestCode);
}

还有

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
{
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == 0)
    {
            if (resultCode == RESULT_OK && data !=null )
            {
                // ... now let's see use the picture at data/
                switch(requestCode){
                  case 0:
                    bp = (Bitmap) data.getExtras().get("data");
                    imgPersonalSnap.setImageBitmap(bp);
                    BitmapDrawable drawable = (BitmapDrawable) imgHideBitmap.getDrawable();
                    bitmap = drawable.getBitmap();
                    break;
                  case 1:
                    bp = (Bitmap) data.getExtras().get("data");
                    imgAddressProofSnap.setImageBitmap(bp);
                    BitmapDrawable drawable = (BitmapDrawable) imgHideBitmap.getDrawable();
                    bitmap = drawable.getBitmap();
                    break;
                  case 2:
                    bp = (Bitmap) data.getExtras().get("data");
                    imgPanCardProofSnap.setImageBitmap(bp);
                    BitmapDrawable drawable = (BitmapDrawable) imgHideBitmap.getDrawable();
                    bitmap = drawable.getBitmap();
                    break;

                }

            }
    }
}

希望这对您有帮助。让我知道发生了什么