按下按钮后调用功能会崩溃应用程序

时间：2014-12-07 06:46:00

标签： java android

这是我第一次在这里提问，我对Android应用程序编程很陌生。我所拥有的是一个按钮，当按下该按钮时，使用reading_wav（）读取存储在手机上的文件。但是，按下按钮后，我的应用程序停止响应。我知道这个功能正常，因为我已经在一个单独的java项目上测试了它。 感谢

public class CheckWavFiles2 extends ActionBarActivity {// No runnable

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.check_wav2, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}

public static class PlaceholderFragment extends Fragment {

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_check_wav2,
                container, false);
        return rootView;
    }
}

private static final String LOG_TAG = "CheckWavFiles2";
private static String mFileName = null;
int i = 0;

private NormalButton mNormalButton = null;

class NormalButton extends Button {
    String mClassifyNormal = "Normal.wav";
    OnClickListener clicker = new OnClickListener() {
        public void onClick(View v) {
            setText("Normal.wav");
            onNormal(mClassifyNormal);
        }
    };

    public NormalButton(Context ctx) {
        super(ctx);
        setText("Normal.wav");
        setOnClickListener(clicker);
    }
}

private void onNormal(String fName) {
    if (fName == "Normal.wav") {
        readNormal();
    } else {

    }
}

private void readNormal() {

    new Thread() {
        @Override
        public void run() {
            reading_wav sampleReader = null;

            try {
                sampleReader = new reading_wav(new File(mFileName));
            } catch (UnsupportedAudioFileException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

    }.start();

}

public CheckWavFiles2() {
    mFileName = Environment.getExternalStorageDirectory().getAbsolutePath();
    mFileName += "/audiorecordtest.wav";
}

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    LinearLayout ll = new LinearLayout(this);
    mNormalButton = new NormalButton(this);
    ll.addView(mNormalButton, new LinearLayout.LayoutParams(
            ViewGroup.LayoutParams.WRAP_CONTENT,
            ViewGroup.LayoutParams.WRAP_CONTENT, 0));
    setContentView(ll);
}

}

Logcat输出：

    12-07 01:47:03.261: D/libEGL(20770): loaded /system/lib/egl/libEGL_mali.so
12-07 01:47:03.276: D/libEGL(20770): loaded /system/lib/egl/libGLESv1_CM_mali.so
12-07 01:47:03.281: D/libEGL(20770): loaded /system/lib/egl/libGLESv2_mali.so
12-07 01:47:03.291: E/(20770): Device driver API match
12-07 01:47:03.291: E/(20770): Device driver API version: 20
12-07 01:47:03.291: E/(20770): User space API version: 20 
12-07 01:47:03.291: E/(20770): mali: REVISION=Linux-r3p2-01rel2 BUILD_DATE=Mon Sep  2 14:16:28 KST 2013 
12-07 01:47:03.311: D/OpenGLRenderer(20770): Enabling debug mode 0
12-07 01:47:13.261: W/dalvikvm(20770): VFY: unable to resolve exception class 1301 (Ljavax/sound/sampled/UnsupportedAudioFileException;)
12-07 01:47:13.261: W/dalvikvm(20770): VFY: unable to find exception handler at addr 0x11
12-07 01:47:13.261: W/dalvikvm(20770): VFY:  rejected Lcom/example/stethoscope2/CheckWavFiles2$1;.run ()V
12-07 01:47:13.261: W/dalvikvm(20770): VFY:  rejecting opcode 0x0d at 0x0011
12-07 01:47:13.261: W/dalvikvm(20770): VFY:  rejected Lcom/example/stethoscope2/CheckWavFiles2$1;.run ()V
12-07 01:47:13.261: W/dalvikvm(20770): Verifier rejected class Lcom/example/stethoscope2/CheckWavFiles2$1;
12-07 01:47:13.261: D/AndroidRuntime(20770): Shutting down VM
12-07 01:47:13.261: W/dalvikvm(20770): threadid=1: thread exiting with uncaught exception (group=0x41a24930)
12-07 01:47:13.271: E/AndroidRuntime(20770): FATAL EXCEPTION: main
12-07 01:47:13.271: E/AndroidRuntime(20770): java.lang.VerifyError: com/example/stethoscope2/CheckWavFiles2$1
12-07 01:47:13.271: E/AndroidRuntime(20770):    at com.example.stethoscope2.CheckWavFiles2.readNormal(CheckWavFiles2.java:94)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at com.example.stethoscope2.CheckWavFiles2.onNormal(CheckWavFiles2.java:84)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at com.example.stethoscope2.CheckWavFiles2.access$0(CheckWavFiles2.java:82)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at com.example.stethoscope2.CheckWavFiles2$NormalButton$1.onClick(CheckWavFiles2.java:71)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at android.view.View.performClick(View.java:4439)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at android.view.View$PerformClick.run(View.java:18370)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at android.os.Handler.handleCallback(Handler.java:725)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at android.os.Handler.dispatchMessage(Handler.java:92)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at android.os.Looper.loop(Looper.java:176)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at android.app.ActivityThread.main(ActivityThread.java:5299)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at java.lang.reflect.Method.invokeNative(Native Method)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at java.lang.reflect.Method.invoke(Method.java:511)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:869)
12-07 01:47:13.271: E/AndroidRuntime(20770):    at dalvik.system.NativeStart.main(Native Method)
12-07 01:47:13.296: D/dalvikvm(20770): GC_CONCURRENT freed 153K, 16% free 7779K/9172K, paused 3ms+1ms, total 30ms
12-07 01:47:17.156: D/libEGL(21211): loaded /system/lib/egl/libEGL_mali.so
12-07 01:47:17.171: D/libEGL(21211): loaded /system/lib/egl/libGLESv1_CM_mali.so
12-07 01:47:17.176: D/libEGL(21211): loaded /system/lib/egl/libGLESv2_mali.so
12-07 01:47:17.176: E/(21211): Device driver API match
12-07 01:47:17.176: E/(21211): Device driver API version: 20
12-07 01:47:17.176: E/(21211): User space API version: 20 
12-07 01:47:17.176: E/(21211): mali: REVISION=Linux-r3p2-01rel2 BUILD_DATE=Mon Sep  2 14:16:28 KST 2013 
12-07 01:47:17.206: D/OpenGLRenderer(21211): Enabling debug mode 0

1 个答案:

答案 0 :(得分：0)

某些Android版本并不包含所有Java支持的方法，所以这里的问题是你在方法中使用了一些方法CheckWavFiles2() Java 支持这种方法但是你用于 android 的sdk级别不支持，所以，如果你使用android-sdk13（存在于manifest.xml文件中）作为你的min sdk，请尝试使用android-sdk20，然后运行您的应用，我认为它会起作用。

在此之前，我认为问题出在Environment.getExternalStorageDirectory().getAbsolutePath();

所以，请尝试改为：

File mPath = new File(Environment.getExternalStorageDirectory(), "/audiorecordtest.wav");
mFileName = mPath.getAbsolutePath();
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