Java android.app.SuperNotCalledException：Activity 没有调用 super.onCreate()
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android.app.SuperNotCalledException: Activity did not call through to super.onCreate()
提问by azesh
Here is my AndroidMedia player code. I don't know what I am missing in this code, when I run with breakpoint at line MediaPlayer mp = new MediaPlayer()in Debugmode. All the files in zipfolder is played. But when I run the application in normal mode the first file is played and then I get this error:
这是我的Android媒体播放器代码。当我MediaPlayer mp = new MediaPlayer()在Debug模式行中使用断点运行时，我不知道这段代码中缺少什么。播放文件zip夹中的所有文件。但是当我在正常模式下运行应用程序时，会播放第一个文件，然后出现此错误：
android.app.SuperNotCalledException: Activity {com.example.mediaplayer/com.example.mediaplayer.MainActivity} did not call through to super.onCreate()
Code:
代码：
package com.example.mediaplayer;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.apache.commons.io.IOUtils;
import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.Button;
public class MainActivity extends Activity {
private MediaPlayer mp;
private static final String MAIN_TAG ="ERROR";
@Override
protected void onCreate(Bundle savedInstanceState) {
try {
//final String file_loc= Environment.getExternalStorageDirectory().toString();
//Log.i("location",file_loc);
ZipFile zip = new ZipFile("/storage/emulated/0/AjeshDocument/sample.zip");
for(int i=1;i<7;i++){
ZipEntry entry = zip.getEntry("sample/rihanna_"+i+".mp3");
if (entry != null) {
InputStream in = zip.getInputStream(entry);
// see Note #3.
File tempFile = File.createTempFile("_AUDIO_", ".wav");
FileOutputStream out = new FileOutputStream(tempFile);
IOUtils.copy(in, out);
// do something with tempFile (like play it)
File f = tempFile;
try {
if (f.exists())
{
Log.i(MAIN_TAG,"Audio file found!");
MediaPlayer mp = new MediaPlayer();
FileInputStream fis = new FileInputStream(f);
mp.setDataSource(fis.getFD());
mp.prepare();
//mp.setLooping(false);
mp.start();
//mp.stop();
// mp.release();
Log.i(MAIN_TAG,"Pronounciation finished!");
}
else
{
Log.i(MAIN_TAG,"File doesn't exist!!");
}
}
catch (IOException e)
{
Log.i(MAIN_TAG,e.toString());
}
}
else {
// no such entry in the zip
}
} //for end
mp.release();
}
catch (Exception e) {
// handle your exception cases...
Log.i(MAIN_TAG,e.toString());
}
}
@Override
protected void onResume() {
Log.w("Info", "App Resume");
super.onResume();
}
@Override
protected void onStop() {
Log.w("Info", "App stopped");
super.onStop();
}
@Override
protected void onDestroy() {
Log.w("Info", "App destoryed");
super.onDestroy();
}
}
采纳答案by Onik
You didn't call the Activity's onCreate()method, i.e the super class' one. Add the call to MainActivity's onCreate()method:
您没有调用Activity'onCreate()方法，即超类' 方法。添加调用MainActivity的onCreate()方法：
public class MainActivity extends Activity {
private MediaPlayer mp;
private static final String MAIN_TAG ="ERROR";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); // this line is missing
// your code below ...
