我已经实现了绘画功能。我想记录用户的操作并保存为视频文件。就像 IPAD 中的“SHOW ME”应用程序一样。我怎样才能做到这一点?
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1871 次
1 回答
-2
您可以使用以下代码截取您自己的应用程序的屏幕截图(根据您的应用程序稍作修改):
public class AndroidWebImage extends Activity {
ImageView bmImage;
LinearLayout view;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
view = (LinearLayout)findViewById(R.id.screen);
bmImage = (ImageView)findViewById(R.id.image);
view.setDrawingCacheEnabled(true);
// this is the important code :)
// Without it the view will have a dimension of 0,0 and the bitmap will be null
view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),
MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
view.buildDrawingCache(true);
Bitmap b = Bitmap.createBitmap(view.getDrawingCache());
view.setDrawingCacheEnabled(false); // clear drawing cache
bmImage.setImageBitmap(b);
};
}
我使用了以下 xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:id="@+id/screen"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<ImageView
android:id="@+id/image"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
使用 Timer 以固定的时间间隔截取屏幕截图,然后将这一系列图像转换为视频文件,例如:create-a-video-file-from-images-using-ffmpeg
于 2012-06-01T05:25:28.183 回答