运行openCV-Android示例无法按预期工作。我在Windows上安装了Android Studio,提取了OpenCV-Android 2.4.11,示例是tutorial-1-camerapreview(但其他样本似乎也不起作用)
如果我使用'导入模块'并在设备上运行Tutorial1CameraView,一切正常。我有3个普通按钮(link)加上第4个按钮,打开一个菜单。
如果我使用'新项目'并且就像我自己编写的那样(复制/粘贴教程中的代码和文件),它运行相同的应用程序,但没有第4个按钮。所以我无法打开菜单。
这正是我所做的:
新项目 - >空白活动
导入openCV库(I followed the instructions on this page)
在我的MainActivity中复制/粘贴Tutorial1CameraView的源代码
将教程中的res文件夹与Android studio创建的res文件夹合并。我删除了一些文件,比如旧的菜单文件夹 (在我创建项目时生成,并且没有被教程使用), 确保他们不会干涉。 (但如果我继续下去,它仍然无效 它们)
在java和xml文件中重命名一些琐碎的东西,比如包/类,以便编译
如果有帮助,我的java代码是:
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame;
import org.opencv.android.LoaderCallbackInterface;
import org.opencv.android.OpenCVLoader;
import org.opencv.core.Mat;
import org.opencv.android.CameraBridgeViewBase;
import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SurfaceView;
import android.view.WindowManager;
import android.widget.Toast;
public class MainActivity extends Activity implements CvCameraViewListener2 {
private static final String TAG = "OCVSample::Activity";
private CameraBridgeViewBase mOpenCvCameraView;
private boolean mIsJavaCamera = true;
private MenuItem mItemSwitchCamera = null;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
{
Log.i(TAG, "OpenCV loaded successfully");
mOpenCvCameraView.enableView();
} break;
default:
{
super.onManagerConnected(status);
} break;
}
}
};
public MainActivity() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "called onCreate");
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.tutorial1_surface_view);
if (mIsJavaCamera)
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_java_surface_view);
else
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_native_surface_view);
mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
mOpenCvCameraView.setCvCameraViewListener(this);
}
@Override
public void onPause()
{
super.onPause();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
@Override
public void onResume()
{
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}
public void onDestroy() {
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "called onCreateOptionsMenu");
mItemSwitchCamera = menu.add("Toggle Native/Java camera");
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
String toastMesage = new String();
Log.i(TAG, "called onOptionsItemSelected; selected item: " + item);
if (item == mItemSwitchCamera) {
mOpenCvCameraView.setVisibility(SurfaceView.GONE);
mIsJavaCamera = !mIsJavaCamera;
if (mIsJavaCamera) {
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_java_surface_view);
toastMesage = "Java Camera";
} else {
mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_native_surface_view);
toastMesage = "Native Camera";
}
mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
mOpenCvCameraView.setCvCameraViewListener(this);
mOpenCvCameraView.enableView();
Toast toast = Toast.makeText(this, toastMesage, Toast.LENGTH_LONG);
toast.show();
}
return true;
}
public void onCameraViewStarted(int width, int height) {
}
public void onCameraViewStopped() {
}
public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
return inputFrame.rgba();
}
}
我可以加入所需的任何其他文件(它可能与java无关......)
可能是什么问题?为什么应用程序有效,但只有菜单没有?
答案 0 :(得分:2)
要解决此问题,如果AndroidManifest文件中您的活动的theme
属性以.Fullscreen
结尾,请移除.Fullscreen
。
编辑:显然删除.Fullscreen
不起作用,但将theme
替换为没有.Fullscreen
/ .NoActionBar
属性的android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
。在这种情况下....
public void QuerySQL(String SQL) {
try {
Statement statement = connect.createStatement();
rs = statement.executeQuery(SQL);
List<Map<String, String>> data = null;
data = new ArrayList<Map<String,String>>();
while(rs.next()) {
Map<String, String> datanum = new HashMap<String, String>();
datanum.put("A", rs.getString("RoomNumber"));
datanum.put("B", rs.getString("RoomStatus"));
datanum.put("C", rs.getString("RoomType"));
data.add(datanum);
}
String[] from = {"A","B","C"};
int[] views = {R.id.txt_number,R.id.status,R.id.txt_type};
ADAhere = new SimpleAdapter(this, data, R.layout.layout_list_item, from, views);
listViewStats.setAdapter(ADAhere);
} catch (Exception e) {
Toast.makeText(Main.this, e.getMessage().toString(),Toast.LENGTH_LONG).show();
}
}
....
完成了这个伎俩。
答案 1 :(得分:0)
在清单文件中删除android:theme =“@ style / Theme”。