这是我的代码。
public class Starter_info extends Activity implements OnClickListener, OnRatingBarChangeListener
{
private GestureDetector gestureDetector;
String img_url, img_id, img_rat, img_name;
ImageView iv;
ImageView ib_dow, ib_wal;
ImageView btn_rate;
ProgressBar pb;
Dialog dialog;
int downloadedSize = 0;
int totalSize = 0;
TextView cur_val;
/* Rating Bar Dialog */
Dialog rankDialog;
RatingBar ratingBar,pre_rating;
float cus_rating;
ProgressDialog progDailog;
// JSON Node names
private static final String TAG_CONTACTS = "Demo";
private static final String TAG_ID = "id";
private static final String TAG_TITLE = "title";
private static final String TAG_RATING = "Rating";
private static final String TAG_CATEGORY = "Category";
private static final String TAG_IMAGE = "Images";
private static final String TAG_DOWNLOAD = "Downloads";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.starter_info);
Log.v("starter Info Heap","Max Mem in MB:"+(Runtime.getRuntime().maxMemory()/1024/1024));
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
gestureDetector = new GestureDetector(new SwipeGestureDetector());
ImageView rankBtn = (ImageView) findViewById(R.id.btn_starter_info_rate);
rankBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
rankDialog = new Dialog(Starter_info.this,
R.style.FullHeightDialog);
rankDialog.setContentView(R.layout.rating_bar);
rankDialog.setCancelable(true);
ratingBar = (RatingBar) rankDialog
.findViewById(R.id.dialog_ratingbar);
float userRankValue = 0;
// ratingBar.setRating(userRankValue);
ratingBar
.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
@Override
public void onRatingChanged(RatingBar ratingBar,
float rating, boolean fromUser) {
// TODO Auto-generated method stub
cus_rating = rating;
}
});
Button updateButton = (Button) rankDialog
.findViewById(R.id.rank_dialog_button);
updateButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(Starter_info.this,
"Rating is" + cus_rating, Toast.LENGTH_LONG)
.show();
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(
"http://vaibhavtech.com/work/android/rating.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
1);
nameValuePairs.add(new BasicNameValuePair("id",
img_id));
nameValuePairs.add(new BasicNameValuePair("rating",
"" + cus_rating));
httppost.setEntity(new UrlEncodedFormEntity(
nameValuePairs));
// Execute HTTP Post Request
ResponseHandler<String> responseHandler = new BasicResponseHandler();
String response = httpclient.execute(httppost,
responseHandler);
// This is the response from a php application
String reverseString = response;
Log.i("response", reverseString);
} catch (ClientProtocolException e) {
Log.i("CPE response ", e.toString());
// TODO Auto-generated catch block
} catch (IOException e) {
Log.i("IOException response ", e.toString());
// TODO Auto-generated catch block
}
rankDialog.dismiss();
}
});
// now that the dialog is set up, it's time to show it
rankDialog.show();
}
});
img_url = MyFragment.img_url;
img_id = MyFragment.img_id;
img_rat = MyFragment.img_rating;
img_name = MyFragment.img_name;
ib_dow = (ImageView) findViewById(R.id.ib_starter_info_down);
ib_wal = (ImageView) findViewById(R.id.ib_starter_info_Wall);
ib_dow.setOnClickListener(this);
ib_wal.setOnClickListener(this);
pre_rating=(RatingBar) findViewById(R.id.rb_starter_info_pre_rating);
pre_rating.setRating(Float.parseFloat(img_rat));
iv = (ImageView) findViewById(R.id.iv_starter_info);
// Log.i("image id", img_id);
// Log.i("image name", img_name);
// Log.i("image url", img_url);
// Log.i("image rat", img_rat);
int loader = R.drawable.load;
ImageLoader imgLoader = new ImageLoader(getApplicationContext());
imgLoader.DisplayImage(img_url, loader, iv);
}
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch(item.getItemId())
{
case android.R.id.home:
onBackPressed();
return true;
case R.id.home:
Intent intent = new Intent(this, Category.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.ib_starter_info_down:
showProgress(img_url);
new Thread(new Runnable() {
public void run() {
downloadFile();
}
}).start();
break;
case R.id.ib_starter_info_Wall:
showProgress(img_url);
new Thread(new Runnable() {
public void run() {
downloadFile_Wall();
WallpaperManager myWallpaperManager = WallpaperManager
.getInstance(getApplicationContext());
Bitmap o = BitmapFactory.decodeFile("/sdcard/." + img_name);
try {
myWallpaperManager.setBitmap(o);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}).start();
break;
case R.id.btn_starter_info_rate:
break;
}
}
@Override
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
// TODO Auto-generated method stub
Toast.makeText(this, "Ypur Rating is" + rating, Toast.LENGTH_LONG)
.show();
}
void downloadFile() {
try {
URL url = new URL(img_url);
HttpURLConnection urlConnection = (HttpURLConnection) url
.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
// connect
urlConnection.connect();
// set the path where we want to save the file
File SDCardRoot = Environment.getExternalStorageDirectory();
// create a new file, to save the downloaded file
File file = new File(SDCardRoot, img_name);
FileOutputStream fileOutput = new FileOutputStream(file);
// Stream used for reading the data from the internet
InputStream inputStream = urlConnection.getInputStream();
// this is the total size of the file which we are downloading
totalSize = urlConnection.getContentLength();
runOnUiThread(new Runnable() {
public void run() {
pb.setMax(totalSize);
}
});
// create a buffer...
byte[] buffer = new byte[1024];
int bufferLength = 0;
while ((bufferLength = inputStream.read(buffer)) > 0) {
fileOutput.write(buffer, 0, bufferLength);
downloadedSize += bufferLength;
// update the progressbar //
runOnUiThread(new Runnable() {
public void run() {
pb.setProgress(downloadedSize);
float per = ((float) downloadedSize / totalSize) * 100;
cur_val.setText("Downloaded " + downloadedSize
+ "KB / " + totalSize + "KB (" + (int) per
+ "%)");
}
});
}
// close the output stream when complete //
fileOutput.close();
runOnUiThread(new Runnable() {
public void run() {
// pb.dismiss(); // if you want close it..
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(
"http://vaibhavtech.com/work/android/downloads.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
1);
nameValuePairs
.add(new BasicNameValuePair("id", img_id));
httppost.setEntity(new UrlEncodedFormEntity(
nameValuePairs));
// Execute HTTP Post Request
ResponseHandler<String> responseHandler = new BasicResponseHandler();
String response = httpclient.execute(httppost,
responseHandler);
// This is the response from a php application
String reverseString = response;
Log.i("response", reverseString);
} catch (ClientProtocolException e) {
Log.i("CPE response ", e.toString());
// TODO Auto-generated catch block
} catch (IOException e) {
Log.i("IOException response ", e.toString());
// TODO Auto-generated catch block
}
dialog.dismiss();
Toast.makeText(Starter_info.this, "SuccessFully Download..",
Toast.LENGTH_LONG).show();
}
});
} catch (final MalformedURLException e) {
showError("Error : MalformedURLException " + e);
e.printStackTrace();
} catch (final IOException e) {
showError("Error : IOException " + e);
e.printStackTrace();
} catch (final Exception e) {
showError("Error : Please check your internet connection " + e);
}
}
// For WallPaper Set Click Here.............
void downloadFile_Wall() {
try {
URL url = new URL(img_url);
HttpURLConnection urlConnection = (HttpURLConnection) url
.openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setDoOutput(true);
// connect
urlConnection.connect();
// set the path where we want to save the file
File SDCardRoot = Environment.getExternalStorageDirectory();
// create a new file, to save the downloaded file
File file = new File(SDCardRoot, "." + img_name);
FileOutputStream fileOutput = new FileOutputStream(file);
// Stream used for reading the data from the internet
InputStream inputStream = urlConnection.getInputStream();
// this is the total size of the file which we are downloading
totalSize = urlConnection.getContentLength();
runOnUiThread(new Runnable() {
public void run() {
pb.setMax(totalSize);
}
});
// create a buffer...
byte[] buffer = new byte[1024];
int bufferLength = 0;
while ((bufferLength = inputStream.read(buffer)) > 0) {
fileOutput.write(buffer, 0, bufferLength);
downloadedSize += bufferLength;
// update the progressbar //
runOnUiThread(new Runnable() {
public void run() {
pb.setProgress(downloadedSize);
float per = ((float) downloadedSize / totalSize) * 100;
cur_val.setText("Please Wait...");
}
});
}
// close the output stream when complete //
fileOutput.close();
runOnUiThread(new Runnable() {
public void run() {
// pb.dismiss(); // if you want close it..
Toast.makeText(Starter_info.this, "Changes Apply SuccessFully..",
Toast.LENGTH_LONG).show();
dialog.dismiss();
// startActivity(new
// Intent(Starter_info.this,CropImage.class));
}
});
} catch (final MalformedURLException e) {
showError("Error : MalformedURLException " + e);
e.printStackTrace();
} catch (final IOException e) {
showError("Error : IOException " + e);
e.printStackTrace();
} catch (final Exception e) {
showError("Error : Please check your internet connection " + e);
}
}
void showError(final String err) {
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(Starter_info.this, err, Toast.LENGTH_LONG)
.show();
}
});
}
void showProgress(String file_path) {
dialog = new Dialog(Starter_info.this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.myprogressdialog);
dialog.setTitle("Download Progress");
TextView text = (TextView) dialog.findViewById(R.id.tv1);
text.setText("Downloading file from ... " + file_path);
cur_val = (TextView) dialog.findViewById(R.id.cur_pg_tv);
cur_val.setText("Starting download...");
//dialog.show();
pb = (ProgressBar) dialog.findViewById(R.id.progress_bar);
pb.setProgress(0);
pb.setProgressDrawable(getResources().getDrawable(
R.drawable.green_progress));
Toast.makeText(getApplicationContext(), "Please Wait..Process Run In BackGround", Toast.LENGTH_LONG).show();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (gestureDetector.onTouchEvent(event)) {
return true;
}
return super.onTouchEvent(event);
}
private void onLeftSwipe() {
// // Do something
// MyFragment.img_url = "http://vaibhavtech.com/work/wallpaper/upload/Picture-6.jpg";
// MyFragment.img_id = "75";
// MyFragment.img_rating = "4";
// MyFragment.img_name = "Picture-6.jpg";
// Log.i("Swipe", "Left Swipe");
Toast.makeText(Starter_info.this, "Left Swipe", Toast.LENGTH_LONG).show();
// startActivity(new Intent(Starter_info.this, Starter_info.class));
JSONArray contacts = null;
Swipe_parser jParser = new Swipe_parser();
// getting JSON string from URL
String url="http://vaibhavtech.com/work/android/wallpaper_data.php?next="+img_id;
JSONObject json = jParser.getJSONFromUrl(url);
try {
// Getting Array of Contacts
contacts = json.getJSONArray(TAG_CONTACTS);
// looping through All Contacts
for(int i = 0; i < contacts.length(); i++){
JSONObject c = contacts.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ID);
String title = c.getString(TAG_TITLE);
String rating = c.getString(TAG_RATING);
String image = c.getString(TAG_IMAGE);
String category = c.getString(TAG_CATEGORY);
String download=c.getString(TAG_DOWNLOAD);
Log.i("id", id);
Log.i("titleq", title);
Log.i("rating", rating);
Log.i("image",image);
Log.i("catet", category);
Log.i("download", download);
MyFragment.img_url="http://vaibhavtech.com/work/android/admin/upload/"+image;
MyFragment.img_id=id;
MyFragment.img_rating=rating;
MyFragment.img_name=image;
}
startActivity(new Intent(Starter_info.this,Starter_info.class));
finish();
} catch (JSONException e) {
e.printStackTrace();
}
}
private void onRightSwipe() {
// Do something
Log.i("Swipe", "Right Swipe");
Toast.makeText(Starter_info.this, "Right Swipe", Toast.LENGTH_LONG)
.show();
JSONArray contacts = null;
Swipe_parser jParser = new Swipe_parser();
// getting JSON string from URL
String url="http://vaibhavtech.com/work/android/wallpaper_data.php?pre="+img_id;
JSONObject json = jParser.getJSONFromUrl(url);
try {
// Getting Array of Contacts
contacts = json.getJSONArray(TAG_CONTACTS);
// looping through All Contacts
for(int i = 0; i < contacts.length(); i++){
JSONObject c = contacts.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_ID);
String title = c.getString(TAG_TITLE);
String rating = c.getString(TAG_RATING);
String image = c.getString(TAG_IMAGE);
String category = c.getString(TAG_CATEGORY);
String download=c.getString(TAG_DOWNLOAD);
Log.i("id", id);
Log.i("titleq", title);
Log.i("rating", rating);
Log.i("image",image);
Log.i("catet", category);
Log.i("download", download);
MyFragment.img_url="http://vaibhavtech.com/work/android/admin/upload/"+image;
MyFragment.img_id=id;
MyFragment.img_rating=rating;
MyFragment.img_name=image;
}
startActivity(new Intent(Starter_info.this,Starter_info.class));
finish();
} catch (JSONException e) {
e.printStackTrace();
}
}
// Private class for gestures
private class SwipeGestureDetector extends SimpleOnGestureListener {
// Swipe properties, you can change it to make the swipe
// longer or shorter and speed
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_MAX_OFF_PATH = 200;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
try {
float diffAbs = Math.abs(e1.getY() - e2.getY());
float diff = e1.getX() - e2.getX();
if (diffAbs > SWIPE_MAX_OFF_PATH)
return false;
// Left swipe
if (diff > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Starter_info.this.onLeftSwipe();
// Right swipe
} else if (-diff > SWIPE_MIN_DISTANCE
&& Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
Starter_info.this.onRightSwipe();
}
} catch (Exception e) {
Log.e("YourActivity", "Error on gestures");
}
return false;
}
}
}
这是我的logcat：
11-11 04:54:58.057: V/starter Info Heap(3122): Max Mem in MB:32
11-11 04:54:58.077: D/AndroidRuntime(3122): Shutting down VM
11-11 04:54:58.097: W/dalvikvm(3122): threadid=1: thread exiting with uncaught exception (group=0x41465700)
11-11 04:54:58.187: E/AndroidRuntime(3122): FATAL EXCEPTION: main
11-11 04:54:58.187: E/AndroidRuntime(3122): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.target_wallpaper77/com.example.target_wallpaper77.Starter_info}: java.lang.NumberFormatException: Invalid float: "2:00 h"
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.ActivityThread.access$600(ActivityThread.java:141)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.os.Handler.dispatchMessage(Handler.java:99)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.os.Looper.loop(Looper.java:137)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.ActivityThread.main(ActivityThread.java:5103)
11-11 04:54:58.187: E/AndroidRuntime(3122): at java.lang.reflect.Method.invokeNative(Native Method)
11-11 04:54:58.187: E/AndroidRuntime(3122): at java.lang.reflect.Method.invoke(Method.java:525)
11-11 04:54:58.187: E/AndroidRuntime(3122): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
11-11 04:54:58.187: E/AndroidRuntime(3122): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-11 04:54:58.187: E/AndroidRuntime(3122): at dalvik.system.NativeStart.main(Native Method)
11-11 04:54:58.187: E/AndroidRuntime(3122): Caused by: java.lang.NumberFormatException: Invalid float: "2:00 h"
11-11 04:54:58.187: E/AndroidRuntime(3122): at java.lang.StringToReal.invalidReal(StringToReal.java:63)
11-11 04:54:58.187: E/AndroidRuntime(3122): at java.lang.StringToReal.parseFloat(StringToReal.java:310)
11-11 04:54:58.187: E/AndroidRuntime(3122): at java.lang.Float.parseFloat(Float.java:300)
11-11 04:54:58.187: E/AndroidRuntime(3122): at com.example.target_wallpaper77.Starter_info.onCreate(Starter_info.java:198)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.Activity.performCreate(Activity.java:5133)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
11-11 04:54:58.187: E/AndroidRuntime(3122): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
11-11 04:54:58.187: E/AndroidRuntime(3122): ... 11 more
11-11 04:59:58.414: I/Process(3122): Sending signal. PID: 3122 SIG: 9
11-11 04:59:59.277: D/dalvikvm(3179): GC_FOR_ALLOC freed 72K, 7% free 2688K/2880K, paused 50ms, total 52ms
11-11 04:59:59.287: I/dalvikvm-heap(3179): Grow heap (frag case) to 3.343MB for 635812-byte allocation
11-11 04:59:59.407: D/dalvikvm(3179): GC_FOR_ALLOC freed 2K, 6% free 3306K/3504K, paused 126ms, total 126ms
11-11 04:59:59.450: D/dalvikvm(3179): GC_FOR_ALLOC freed <1K, 6% free 3307K/3504K, paused 33ms, total 33ms
11-11 04:59:59.467: I/dalvikvm-heap(3179): Grow heap (frag case) to 4.807MB for 1536016-byte allocation
11-11 04:59:59.597: D/dalvikvm(3179): GC_FOR_ALLOC freed <1K, 5% free 4807K/5008K, paused 128ms, total 128ms
11-11 04:59:59.867: D/dalvikvm(3179): GC_FOR_ALLOC freed 1K, 4% free 5412K/5616K, paused 27ms, total 27ms
11-11 05:00:00.067: V/Category Heap(3179): Max Mem in MB:32
11-11 05:00:00.267: D/gralloc_goldfish(3179): Emulator without GPU emulation detected.
答案 0 :(得分：1)
Float.parseFloat将无法解析，因为它不理解“2:00 h”您将需要以某种方式解析2.0f。 parseFloat无法解析字符和符号。