Question

private void dispatchTakeVideo() throws InterruptedException {

    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
             + "/balloon_launch/" +  System.currentTimeMillis()+ ".3gp";
    recorder = new MediaRecorder();
    recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setOutputFile(path);
    recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
    recorder.setMaxDuration(3600); 
    recorder.setVideoSize(320, 240);
    recorder.setVideoFrameRate(15); 
    Thread.sleep(10000); 
    try {
            recorder.prepare();
            Thread.sleep(5000);
        } catch (IOException e) {
            Log.e("Recording","prepare() failed");
        }
    Thread.sleep(5000);
    recorder.start();
    Thread.sleep(5000);
}

我正在尝试以编程方式在我的应用程序中启动视频录制，但是，我很难让媒体录制器工作。我得到一个非法的状态异常，并且在调试之后，我知道prepare（）方法对我造成了问题...有些人建议在其他类似的问题上使用Thread.sleep（）所以我已经包含了几个地方，但这也不起作用...我已经在视频中包含了视频，logcat和权限的方法。我想知道它是否与我在xml中做过任何事情的事实有关活动及其原因是我不想显示我在屏幕上录制的视频，我只是希望它在某个时间录制...感谢您的帮助。

这是Log Cat

11-22 11:14:38.327: E/Trace(795): error opening trace file: No such file or directory (2)
11-22 11:14:39.007: D/dalvikvm(795): GC_FOR_ALLOC freed 51K, 3% free 8055K/8259K, paused      35ms, total 37ms
11-22 11:14:39.027: I/dalvikvm-heap(795): Grow heap (frag case) to 9.743MB for 1918240-  byte allocation
11-22 11:14:39.097: D/dalvikvm(795): GC_CONCURRENT freed 1K, 3% free 9927K/10183K, paused  24ms+5ms, total 71ms
11-22 11:14:39.387: D/gralloc_goldfish(795): Emulator without GPU emulation detected.
11-22 11:14:52.650: E/Recording(795): prepare() failed
11-22 11:14:57.653: E/MediaRecorder(795): start called in an invalid state: 4
11-22 11:14:57.653: D/AndroidRuntime(795): Shutting down VM
11-22 11:14:57.656: W/dalvikvm(795): threadid=1: thread exiting with uncaught exception      (group=0x40a13300)
11-22 11:14:57.666: E/AndroidRuntime(795): FATAL EXCEPTION: main
11-22 11:14:57.666: E/AndroidRuntime(795): java.lang.IllegalStateException
11-22 11:14:57.666: E/AndroidRuntime(795):  at android.media.MediaRecorder.start(Native  Method)
11-22 11:14:57.666: E/AndroidRuntime(795):  at  com.finding.videoing.sharing.MainActivity.dispatchTakeVideoIntent(MainActivity.java:148)
11-22 11:14:57.666: E/AndroidRuntime(795):  at   com.finding.videoing.sharing.MainActivity.access$0(MainActivity.java:129)
11-22 11:14:57.666: E/AndroidRuntime(795):  at    com.finding.videoing.sharing.MainActivity$1.onClick(MainActivity.java:61)
11-22 11:14:57.666: E/AndroidRuntime(795):  at    android.view.View.performClick(View.java:4084)
11-22 11:14:57.666: E/AndroidRuntime(795):  at     android.view.View$PerformClick.run(View.java:16966)
11-22 11:14:57.666: E/AndroidRuntime(795):  at   android.os.Handler.handleCallback(Handler.java:615)
11-22 11:14:57.666: E/AndroidRuntime(795):  at  android.os.Handler.dispatchMessage(Handler.java:92)
11-22 11:14:57.666: E/AndroidRuntime(795):  at android.os.Looper.loop(Looper.java:137)
11-22 11:14:57.666: E/AndroidRuntime(795):  at   android.app.ActivityThread.main(ActivityThread.java:4745)
11-22 11:14:57.666: E/AndroidRuntime(795):  at       java.lang.reflect.Method.invokeNative(Native Method)
11-22 11:14:57.666: E/AndroidRuntime(795):  at   java.lang.reflect.Method.invoke(Method.java:511)
11-22 11:14:57.666: E/AndroidRuntime(795):  at   com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-22 11:14:57.666: E/AndroidRuntime(795):  at   com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-22 11:14:57.666: E/AndroidRuntime(795):  at dalvik.system.NativeStart.main(Native  Method)

Android MediaRecorder IllegalStateException准备方法

0 个答案: