CWAC 相机库内存不足

Question

我在尝试使用 android 中的 CWAC 库拍照时内存不足。我只是在主要活动中使用一个按钮并动态创建片段。

预览会很好。但是当我点击拍照时，它会因内存不足而崩溃。有人可以建议如何解决这个问题吗？

CameraFragment cameraFragment = new CameraFragment();

        setContentView(R.layout.activity_shopping);
        //Create the CameraFragment and add it to the layout
        //CameraFragment f = new CameraFragment();
        getFragmentManager().beginTransaction()
                .add(R.id.container, cameraFragment, TAG_CAMERA_FRAGMENT)
                .commit();

        //Set the CameraHost
        SimpleCameraHost.Builder builder=
                new SimpleCameraHost.Builder(new SimpleCameraHost(this));

        //SimpleCameraHost simpleCameraHost = new SimpleCameraHost(this);
        cameraFragment.setHost(builder.useFullBleedPreview(true).build());

        takePicture = (Button) findViewById(R.id.buttonPicture);

        //Set an onClickListener for a shutter button
        findViewById(R.id.buttonPicture).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                takePicture();
            }
        });

private void takePicture() {
    CameraFragment f = (CameraFragment) getFragmentManager().findFragmentByTag(TAG_CAMERA_FRAGMENT);
    if (f != null && f.isVisible()) {
        PictureTransaction xact=new PictureTransaction(f.getHost());

    xact.flashMode(Camera.Parameters.FLASH_MODE_AUTO);
    f.takePicture(xact);
    }
}

06-30 15:32:10.661  29474-29823/com.aithops.provrum.app E/dalvikvm-heap﹕ Out of memory on a 31961104-byte allocation.
06-30 15:32:10.661  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ "Thread-32873" prio=5 tid=12 RUNNABLE
06-30 15:32:10.661  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ | group="main" sCount=0 dsCount=0 obj=0x425fcb40 self=0x5976d688
06-30 15:32:10.661  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ | sysTid=29823 nice=0 sched=0/0 cgrp=apps handle=1501887568
06-30 15:32:10.661  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ | state=R schedstat=( 424041835 31308999 114 ) utm=36 stm=5 core=3
06-30 15:32:10.661  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ at android.graphics.Bitmap.nativeCreate(Native Method)
06-30 15:32:10.666  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ at android.graphics.Bitmap.createBitmap(Bitmap.java:726)
06-30 15:32:10.666  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ at android.graphics.Bitmap.createBitmap(Bitmap.java:703)
06-30 15:32:10.666  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ at android.graphics.Bitmap.createBitmap(Bitmap.java:636)
06-30 15:32:10.666  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ at com.commonsware.cwac.camera.ImageCleanupTask.run(ImageCleanupTask.java:121)
06-30 15:32:10.666  29474-29823/com.aithops.provrum.app I/dalvikvm﹕ [ 06-30 15:32:10.666 29474:29823 W/dalvikvm ]
    threadid=12: thread exiting with uncaught exception (group=0x41a33700)
06-30 15:32:10.671  29474-29823/com.aithops.provrum.app E/AndroidRuntime﹕ FATAL EXCEPTION: Thread-32873
    java.lang.OutOfMemoryError
            at android.graphics.Bitmap.nativeCreate(Native Method)
            at android.graphics.Bitmap.createBitmap(Bitmap.java:726)
            at android.graphics.Bitmap.createBitmap(Bitmap.java:703)
            at android.graphics.Bitmap.createBitmap(Bitmap.java:636)
            at com.commonsware.cwac.camera.ImageCleanupTask.run(ImageCleanupTask.java:121)

Answer 1

the documentation 对此进行了介绍。要么使用android:largeHeap="true"，要么让你的CameraHost从maxPictureCleanupHeapUsage()返回更接近0.0f的东西。