小编Opi*_*chs的帖子

我有一个问题,因为我在Playstore上更新了我的应用程序.自此更新以来,抛出异常,但我没有更改与此异常相关的任何内容.

堆栈跟踪:

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{de.opiatefuchs.onthejobtimerlight/de.opiatefuchs.onthejobtimerlight.OnTheJobTimerActivity}: java.lang.ClassNotFoundException: Didn't find class "de.opiatefuchs.onthejobtimerlight.OnTheJobTimerActivity" on path: DexPathList[[zip file "/data/app/de.opiatefuchs.onthejobtimerlight-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2236)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
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.ClassNotFoundException: Didn't find class "de.opiatefuchs.onthejobtimerlight.OnTheJobTimerActivity" on path: DexPathList[[zip file "/data/app/de.opiatefuchs.onthejobtimerlight-1/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.app.Instrumentation.newActivity(Instrumentation.java:1066)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2226)
... 10 more
Suppressed: java.lang.ClassNotFoundException: de.opiatefuchs.onthejobtimerlight.OnTheJobTimerActivity
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504) …

我在路径上绘制文本做了一些测试.我通过将位图设置为画布来制作背景图片.然后,我在画布的路径上绘制文本,按矩阵旋转.我必须缩短代码,我只会发布重要的部分,因为它太长了.下面显示的图像是用gimp裁剪的,所以不要被不同的尺寸所激怒.我的Rect,Path和Matrix对象:

    RectF drawTextOval;
    Path drawTextPath;
    Matrix mDrawnMatrix;

现在,这就是我在圆形路径上绘制文本的方法:

    drawTextOval.set(drawTextPosX - drawTextArc, drawTextPosY
                    - drawTextArc, drawTextPosX + drawTextArc, drawTextPosY
                    + drawTextArc);
            drawTextPath.addArc(drawTextOval, 0, 360);

            drawTextPath.computeBounds(drawTextOval, true);
            mDrawnMatrix.postRotate(drawTextArcStart,
                    (drawTextOval.right + drawTextOval.left) / 2,
                    (drawTextOval.bottom + drawTextOval.top) / 2);
            drawTextPath.transform(mDrawnMatrix);

            patternCanvas.drawTextOnPath(drawText, drawTextPath, 0, 0,
                    mFixedTextPaint); 

在此之前,一切看起来都很好:

但保存整个屏幕后,旋转的文本在保存的.png图像处看起来变形.所有其他组件看起来都很好.我做了一些其他的文字,线性或角度的图纸,这一切都有效.甚至一些.png位图绘制到画布和背景图像......一切正常.但是圆圈路径绘制的文本如下所示:

我没有对位图进行任何缩放,只需保存画布图像:

    FileOutputStream fos = new FileOutputStream(saveFile);
        this.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
        Bitmap bitmap = this.getDrawingCache();


        bitmap.compress(CompressFormat.PNG, 100, fos);
        fos.flush();
        fos.close();

为什么文字会变形？有谁看到我的错误？提前致谢....

编辑

我尝试了一些东西并发现将anyDensity设置为false或禁用Manifest中的硬件加速将在保存之前在运行时显示效果.这对我来说,在使用getDrawingCache()保存位图时,此时会禁用缩放.但为什么？

我发现的最后一件事,曲率越低,文字缩放越低.如果文字只是略微弯曲,那似乎很好.

目前我正在玩新的Smack 4.1,它提供对android的全面支持.发送和接收消息没问题,工作正常.但现在,我被困在发送和接收文件.例如:

发送文件

public void sendFile(String fileName,String to){

        if(transferManager==null) {
            transferManager = FileTransferManager.getInstanceFor(mConnection);

        }


        OutgoingFileTransfer transfer = transferManager.createOutgoingFileTransfer(to);

        try {

            transfer.sendFile(new File(fileName), "This is a Test!");
        } catch (SmackException e) {
            e.printStackTrace();
        }
    }

接收文件

 public void setReceiveFileListener(){


        if(transferManager==null) {
            transferManager = FileTransferManager.getInstanceFor(mConnection);
        }
        transferManager.addFileTransferListener(new FileTransferListener() {
            @Override
            public void fileTransferRequest(FileTransferRequest request) {
                IncomingFileTransfer transfer = request.accept();

                try {
                    File file = new File(Environment.getExternalStorageDirectory()  + File.separator +"TEST"+File.separator+ "new.txt");
                    transfer.recieveFile(file);

                } catch (SmackException | IOException e) {
                    e.printStackTrace();

                }
            }
        }); …