11

当用户点击相机时，它会在几秒钟后打开下一个屏幕Fail to connect to camera service

它说 cannot connect to camera

这是我的代码：

   public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    View viewLoad = LayoutInflater.from(CameraActivity.this).inflate(R.layout.camera, null);
    setContentView(viewLoad);

    Bundle bundle = this.getIntent().getExtras();
    seletctedRetailer = bundle.getString("RetailerName");
    retailerCode = bundle.getString("RetailerCode");

    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
    Bundle b = new Bundle();
    b.putString("Activity", "RetailerOrderSActivity");
    b.putString("RetailerName", seletctedRetailer);
    b.putString("RetailerCode", retailerCode);

    cameraIntent.putExtras(b);
    getParent().getParent().setTitle("Image Capture");
    startActivityForResult(cameraIntent,CAMERA_PIC_REQUEST);  

    vale +=1;

    Button imgMCancel =(Button)findViewById(R.id.imgMCancel);
    imgMCancel.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            Intent i = new Intent(getBaseContext(), CameraMainActivity.class);
            Bundle bundle = new Bundle(); 
            bundle.putString("Activity", "CameraMainActivity");
            bundle.putString("RetailerName", seletctedRetailer);
            bundle.putString("RetailerCode", retailerCode);
            i.putExtras(bundle);
            View vi = SalesActivityGroup.group.getLocalActivityManager().startActivity("CameraMainActivity", i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).getDecorView();
            SalesActivityGroup.group.replaceView(vi);
        }
    });
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
    super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == CAMERA_PIC_REQUEST) {
            System.out.println("====YES======");
             Bitmap thumbnail = (Bitmap) data.getExtras().get("data");  
                ImageView image = (ImageView) findViewById(R.id.imageView1);  
                image.setImageBitmap(thumbnail);  
        }
}

这是我的布局：

      <?xml version="1.0" encoding="utf-8"?>


    <LinearLayout android:id="@+id/header"
                android:layout_height="wrap_content"
                android:layout_marginBottom="10dp"
                android:layout_marginTop="75dp"
                android:layout_width="fill_parent">


        <Button android:layout_width="wrap_content" 
                android:text="Cancel" 
                android:textColor="#FFFFFF"
                android:background="@drawable/btn_red"
                android:layout_height="wrap_content" 
                android:layout_marginLeft="5dp"
                android:layout_marginRight="150dp"
                android:id="@+id/imgMCancel" 
                >
       </Button>

       <Button android:layout_width="wrap_content"
                android:layout_height="wrap_content" 
                android:id="@+id/buttonClick"
                android:text="Make Photo" 
                android:textColor="#FFFFFF"
                android:background="@drawable/btn_red"
                android:layout_gravity="center">
        </Button>


    </LinearLayout>

这是我的 AndroidManifest.xml 文件

     <activity android:name=".sales.CameraActivity"              android:screenOrientation="landscape"  android:configChanges="orientation|keyboardHidden"  android:clearTaskOnLaunch="false">
        <intent-filter>
            <action android:name="android.media.action.IMAGE_CAPTURE" />
            <category android:name="android.intent.category.DEFAULT" />
      </intent-filter>
  </activity>

我是根据这个链接http://mobile.tutsplus.com/tutorials/android/android-sdk-quick-tip-launching-the-camera/

请帮我解决问题。我的应用程序包含 Tab ActivityGroup。

提前致谢..

4

3 回答 3

21

您在清单中忘记了某些内容，请看这里的相机类

将此添加到您的清单中：

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

希望能帮助到你！

于 2012-04-11T05:47:25.727 回答
6

这是我的应用程序代码——希望对您有所帮助：

public class CameraActivity extends Activity {
    ImageView img_logo;
    public static Bitmap bitmap;
    public static  String selectedImagePath="";
    protected boolean _taken;   
    protected static final String PHOTO_TAKEN   = "photo_taken";
    int count = 0;
    static String image1 = "";
    /*static String _path="";
    Bitmap bita;
    ParsingForCabDetails obj_ParsingForCabDetails;
    InputStream is;
    protected boolean _taken;   
    protected static final String PHOTO_TAKEN = "photo_taken";*/
    ProgressDialog pd;
    //ImageView iv;
    Button cancel,Ok;
    String alert="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.camera);

        img_logo = (ImageView) findViewById(R.id.camera_image);
        cancel = (Button) findViewById(R.id.camera_taken);
        upload = (Button) findViewById(R.id.camerabtnupload);

        if(image1.length()<= 0)
        startCameraActivity();

        upload.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                finish();
                if(image1.length() > 0){
                pd = ProgressDialog.show(SmallyTaxiTabbar.tabContext, "", "Loading....");
                new Thread(new Runnable() {

                        public void run() {

                            LoardServer();
                            handler.sendEmptyMessage(0);

                        }
                    }).start();

            }
                else
                    Toast.makeText(getApplicationContext(),"No Capture Image",2000).show();
            }


        });
        img_logo.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                startCameraActivity();  
            }
        });

        cancel.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                finish();
                selectedImagePath= "";
                image1="";
                }
        });


    }


    public void LoardServer() {
    // this is use for upload image or save image   

    }


    private Handler handler = new Handler(){
        public void handleMessage(android.os.Message msg) {
            pd.dismiss();
            finish();
            if(alert.length() >0 ){
                Log.d("hello","alert"+alert);
                Toast.makeText(getApplicationContext(),alert, 2000).show();
            }
            else
                FindCabDetails.iv_camera.setImageBitmap(bitmap);

            selectedImagePath= "";
            image1="";

        };
    };
    protected void startCameraActivity() {
        selectedImagePath = Environment.getExternalStorageDirectory() + "/default"+count+".jpg";
        count++;
        File file = new File(selectedImagePath);
        Uri outputFileUri = Uri.fromFile(file);
        Intent intent = new Intent (android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
        startActivityForResult(intent, 0);
        }
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (resultCode) {
        case -1:
        onPhotoTaken();
        break;
        }
        }
        protected void onPhotoTaken() {
        _taken = true;
        bitmap = BitmapFactory.decodeFile(selectedImagePath);
        bitmap = decodeFile();
        image1 = selectedImagePath;
        img_logo.setImageBitmap(bitmap);

        }
        @Override
        protected void onRestoreInstanceState(Bundle savedInstanceState) {
        if (savedInstanceState.getBoolean(PHOTO_TAKEN)) {
        onPhotoTaken();
        }
        }
        @Override
        protected void onSaveInstanceState(Bundle outState) {
        outState.putBoolean(PHOTO_TAKEN, _taken);
        }
        private Bitmap decodeFile() {
        try {
        // decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream( selectedImagePath), null, o);
        final int REQUIRED_SIZE = 70;
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
        if (width_tmp / 2 < REQUIRED_SIZE
        || height_tmp / 2 < REQUIRED_SIZE)
        break;
        width_tmp /= 2;
        height_tmp /= 2;
        scale++;
        }
        // decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(selectedImagePath), null, o2);
        } catch (FileNotFoundException e) {
        }
        return null;
        }
        public boolean onKeyDown(int keyCode, KeyEvent event) {
            if(keyCode==KeyEvent.KEYCODE_BACK)
            {
                finish();
            }
            return super.onKeyDown(keyCode, event);
        }

}

使用这个 camera.xml

 <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:background="#FFFFFF" android:layout_height="fill_parent" android:layout_width="fill_parent">
        <RelativeLayout android:id="@+id/relativeLayout1"
            android:layout_width="fill_parent"
            android:background="@drawable/bottoombg" android:layout_height="wrap_content">
            <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true"
                android:layout_centerHorizontal="true" android:textColor="#FBB917"
                android:textStyle="bold" android:textSize="20dip" android:id="@+id/txtCabNametitle" android:text="Camera"></TextView>
            <Button android:layout_alignParentRight="true" android:layout_centerVertical="true"
                android:background="@drawable/filter_btn1"
                android:layout_marginRight="5dip"
                android:layout_height="30dip" android:textColor="#FFFFFF" android:text="Upload" android:layout_width="70dip" android:id="@+id/camerabtnupload"></Button>
            <Button android:layout_centerVertical="true" android:background="@drawable/btn_press_effect" android:layout_height="30dip" android:textColor="#FFFFFF" android:paddingLeft="10dip" android:id="@+id/camera_taken" android:text="Cancel" android:layout_width="70dip"></Button>
        </RelativeLayout>
        <ImageView android:id="@+id/camera_image" android:layout_centerVertical="true" android:layout_centerHorizontal="true" android:layout_height="200dip" android:layout_width="200dip"></ImageView>
    </RelativeLayout>

AndroidManifest.xml

 <uses-permission android:name="android.permission.CAMERA" />
 <uses-feature android:name="android.hardware.camera" />
 <uses-feature android:name="android.hardware.camera.autofocus" />
于 2012-04-11T06:02:55.653 回答
6

您必须在获得预览显示之前解锁相机并在关闭您的应用程序之前正确锁定相机。如果相机没有正确锁定，下次您的应用程序可能会抛出异常。因此，您必须重新启动设备...

于 2012-04-11T06:03:10.673 回答