我不知道发生了什么，我在两个不同的项目中开发了这两个项目。两者都从同一个mysql表中获取数据。然后我有点将这两个项目混合在一个java文件中，之后麻烦来了。请问有人可以F1吗？？
日志猫
10-25 03:04:51.024: E/AndroidRuntime(2227): FATAL EXCEPTION: main
10-25 03:04:51.024: E/AndroidRuntime(2227): java.lang.NullPointerException
10-25 03:04:51.024: E/AndroidRuntime(2227): at com.hadafsoft.smartaddis.Music$3.onItemClick(Music.java:133)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.widget.AdapterView.performItemClick(AdapterView.java:298)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.widget.AbsListView.performItemClick(AbsListView.java:1100)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2788)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.widget.AbsListView$1.run(AbsListView.java:3463)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.os.Handler.handleCallback(Handler.java:730)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.os.Handler.dispatchMessage(Handler.java:92)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.os.Looper.loop(Looper.java:137)
10-25 03:04:51.024: E/AndroidRuntime(2227): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-25 03:04:51.024: E/AndroidRuntime(2227): at java.lang.reflect.Method.invokeNative(Native Method)
10-25 03:04:51.024: E/AndroidRuntime(2227): at java.lang.reflect.Method.invoke(Method.java:525)
10-25 03:04:51.024: E/AndroidRuntime(2227): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-25 03:04:51.024: E/AndroidRuntime(2227): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-25 03:04:51.024: E/AndroidRuntime(2227): at dalvik.system.NativeStart.main(Native Method)
音乐.java
package com.hadafsoft.smartaddis;
//all the necessary imports are imported
public class Music extends Activity {
private String SDCardPath = "/mnt/sdcard/";
public static final int DIALOG_DOWNLOAD_PROGRESS = 0;
public ProgressDialog mProgressDialog, dialog;
public String songSender, tempSong, tempSinger;
public String SongServerPath, SongName;
private ListView lstView;
private ImageAdapter imageAdapter;
public int currentPage = 1;
public int TotalPage = 0;
public Button btnNext;
public Button btnPre;
ArrayList<HashMap<String, Object>> MyArrList = new ArrayList<HashMap<String, Object>>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.music);
// Bets orientation
onConfigurationChanged(null);
// ListView and imageAdapter
lstView = (ListView) findViewById(R.id.listView1);
lstView.setClipToPadding(false);
imageAdapter = new ImageAdapter(getApplicationContext());
lstView.setAdapter(imageAdapter);
// Next
btnNext = (Button) findViewById(R.id.btnNext);
// Perform action on click
btnNext.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
currentPage = currentPage + 1;
ShowData();
}
});
// Previous
btnPre = (Button) findViewById(R.id.btnPre);
// Perform action on click
btnPre.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
currentPage = currentPage - 1;
ShowData();
}
});
// Show first load
ShowData();
// listView1
// OnClick
lstView.setOnItemClickListener(new OnItemClickListener() {
@SuppressLint("NewApi")
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
// *** Check file exists in SDCard ***/
SongServerPath = MyArrList.get(position).get("path").toString();
String fileName = SongServerPath.substring(
SongServerPath.lastIndexOf('/') + 1,
SongServerPath.length());
String strPath = SDCardPath + fileName; // file in sdcard Eg :/mnt/sdcard/Mary.mp3
File file = new File(strPath);
SongName = MyArrList.get(position).get("song_en").toString();
tempSong = MyArrList.get(position).get("song_en").toString();
tempSinger = MyArrList.get(position).get("singer_en").toString();
songSender = "D - "+tempSinger+" - "+tempSong;
/*** if file exists (View for Download) ***/
if (file.exists()) {
ViewMusicFileSDCard(strPath, SongName);
} else {
showYesOrCancelDialog();
}
}
});
Log.i(TAG, "onCreate");
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
Configuration c = getResources().getConfiguration();
if (c.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText(Music.this, "ይህ ገዕ ላንድስኬፕ አቀምመጥ የለውም", Toast.LENGTH_LONG).show();
}
}
class LoadContentFromServer extends AsyncTask<Object, Integer, Object> {
@Override
protected Object doInBackground(Object... params) {
String url = "http://10.0.2.2/android/smartaddis/music/getMusic.php";
JSONArray data;
try {
data = new JSONArray(getJSONUrl(url));
MyArrList = new ArrayList<HashMap<String, Object>>();
HashMap<String, Object> map;
int displayPerPage = 7; // Per Page
int TotalRows = data.length();
int indexRowStart = ((displayPerPage * currentPage) - displayPerPage);
if (TotalRows <= displayPerPage) {
TotalPage = 1;
} else if ((TotalRows % displayPerPage) == 0) {
TotalPage = (TotalRows / displayPerPage);
} else {
TotalPage = (TotalRows / displayPerPage) + 1;
TotalPage = (int) TotalPage;
}
int indexRowEnd = displayPerPage * currentPage;
if (indexRowEnd > TotalRows) {
indexRowEnd = TotalRows;
}
for (int i = indexRowStart; i < indexRowEnd; i++) {
JSONObject c = data.getJSONObject(i);
map = new HashMap<String, Object>();
map.put("id", (String) c.getString("id"));
map.put("singer_en", (String) c.getString("singer_en"));
map.put("song_en", (String) c.getString("song_en"));
map.put("length", (String) c.getString("length"));
map.put("releaseddate", (String) c.getString("releaseddate"));
// Thumbnail Get ImageBitmap To Object
map.put("imagepath", (String) c.getString("imagepath"));
Bitmap newBitmap = loadBitmap(c.getString("imagepath"));
map.put("ImagePathBitmap", newBitmap);
MyArrList.add(map);
publishProgress(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
public void onProgressUpdate(Integer... progress) {
imageAdapter.notifyDataSetChanged();
}
@Override
protected void onPostExecute(Object result) {
if (currentPage >= TotalPage) {
btnNext.setEnabled(false);
} else {
btnNext.setEnabled(true);
}
if (currentPage <= 1) {
btnPre.setEnabled(false);
} else {
btnPre.setEnabled(true);
}
if (dialog != null)
dialog.dismiss();
}
}
class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context context) {
mContext = context;
}
public int getCount() {
return MyArrList.size();
}
public Object getItem(int position) {
return MyArrList.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = inflater.inflate(R.layout.music_column, null);
}
// ImagePath
ImageView imageView = (ImageView) convertView
.findViewById(R.id.music_thumb);
imageView.getLayoutParams().height = 120;
imageView.getLayoutParams().width = 120;
imageView.setPadding(10, 10, 0, 10);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
try {
imageView.setImageBitmap((Bitmap) MyArrList.get(position).get(
"ImagePathBitmap"));
} catch (Exception e) {
imageView
.setImageResource(android.R.drawable.ic_menu_report_image);
}
// ID, Song, Singer, Length and Released-Date
TextView txtSong = (TextView) convertView
.findViewById(R.id.song);
txtSong.setText(MyArrList.get(position).get("song_en").toString());
txtSong.setPadding(10, 0, 0, 0);
TextView txtSinger = (TextView) convertView
.findViewById(R.id.singer);
txtSinger.setText(MyArrList.get(position).get("singer_en")
.toString());
txtSinger.setPadding(10, 0, 0, 0);
TextView txtLength = (TextView) convertView
.findViewById(R.id.length);
txtLength.setText(MyArrList.get(position).get("length").toString());
txtLength.setPadding(10, 0, 0, 0);
TextView txtDate = (TextView) convertView.findViewById(R.id.releaseddate);
txtDate.setText(MyArrList.get(position).get("releaseddate").toString());
txtDate.setPadding(10, 0, 0, 0);
return convertView;
}
}
/*** Get JSON Code from URL ***/
public String getJSONUrl(String url) {
StringBuilder str = new StringBuilder();
HttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try {
HttpResponse response = client.execute(httpGet);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) { // Download OK
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(
new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
str.append(line);
}
} else {
Log.e("Log", "Failed to download file..");
}
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return str.toString();
}
/***** Get Image Resource from URL (Start) *****/
private static final String TAG = "Image";
private static final int IO_BUFFER_SIZE = 4 * 1024;
public static Bitmap loadBitmap(String url) {
Bitmap bitmap = null;
InputStream in = null;
BufferedOutputStream out = null;
try {
in = new BufferedInputStream(new URL(url).openStream(),
IO_BUFFER_SIZE);
final ByteArrayOutputStream dataStream = new ByteArrayOutputStream();
out = new BufferedOutputStream(dataStream, IO_BUFFER_SIZE);
copy(in, out);
out.flush();
final byte[] data = dataStream.toByteArray();
BitmapFactory.Options options = new BitmapFactory.Options();
// options.inSampleSize = 1;
bitmap = BitmapFactory.decodeByteArray(data, 0, data.length,
options);
} catch (IOException e) {
Log.e(TAG, "Could not load Bitmap from: " + url);
} finally {
closeStream(in);
closeStream(out);
}
return bitmap;
}
private static void closeStream(Closeable stream) {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
android.util.Log.e(TAG, "Could not close stream", e);
}
}
}
private static void copy(InputStream in, OutputStream out)
throws IOException {
byte[] b = new byte[IO_BUFFER_SIZE];
int read;
while ((read = in.read(b)) != -1) {
out.write(b, 0, read);
}
}
/***** Get Image Resource from URL (End) *****/
@Override
public void finish() {
super.finish();
overridePendingTransition(R.anim.slide_in_right, R.anim.slide_out_right);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
// webview.saveState(outState);
Log.i(TAG, "onSaveInstanceState");
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onRestoreInstanceState(savedInstanceState);
// webview.restoreState(savedInstanceState);
// lstView.restoreState(savedInstanceState);
Log.i(TAG, "onRestoreInstanceState");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.items, menu);
return super.onCreateOptionsMenu(menu);
}
}