当我尝试执行此类文件时，我收到此错误。我没有得到错误是什么..？任何人都可以确定我哪里出错了吗？
Mnst.class
//this is class file
public class Mnst extends AppCompatActivity implements
View.OnClickListener {
Button btnDatePicker,save;
EditText txtDate;
EditText txtnormal;
private int mYear, mMonth, mDay;
String value;
private String vault;
public static final String SHARED_PREF_NAME = "myloginapp";
//We will use this to store the boolean in sharedpreference to track user is loggedin or not
public static final String LOGGEDIN_SHARED_PREF = "loggedin";
public static final String MYLAST_SHARED_PREF = "my_last_period";
public static final String NORMAL_SHARED_PREF = "normal_cycle";
public static final String REVISED_SHARED_PREF = "revised_cycle";
public static final String NEXT_SHARED_PREF = "next_period_date";
public static final String PREDICTEDSTART_SHARED_PREF = "predicted_start_date";
public static final String PREDICTEDEND_SHARED_PREF = "predicted_end_date";
DatePickerDialog datePickerDialog;
private boolean loggedIn = false;
public static final String UPLOAD_URL = "http://oursite.com/predict.php";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mnst);
btnDatePicker=(Button)findViewById(R.id.btn_date);
save = (Button)findViewById(R.id.save);
txtDate=(EditText)findViewById(R.id.in_date);
txtnormal = (EditText) findViewById(R.id.in_date1);
SharedPreferences sharedPreferences = getSharedPreferences(ProfileLogin.SHARED_PREF_NAME, MODE_PRIVATE);
vault = sharedPreferences.getString(ProfileLogin.EMAIL_SHARED_PREF,"Not Available");
btnDatePicker.setOnClickListener(this);
save.setOnClickListener(this);
}
@Override
public void onClick(View v) {
if (v == btnDatePicker) {
// Get Current Date
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
datePickerDialog = new DatePickerDialog(this,
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
txtDate.setText(dayOfMonth + "-" + (monthOfYear + 1) + "-" + year);
value = txtDate.getText().toString();
}
}, mYear, mMonth, mDay);
datePickerDialog.show();
}
if( v == save)
{
registerUser();
Toast.makeText(getApplicationContext(), value, Toast.LENGTH_SHORT).show();
}
}
/*@Override
protected void onDestroy() {
if(datePickerDialog !=null && datePickerDialog.isShowing())
{
//<HERE I WANT THE STATE TO BE SAVED IN THE BUNDLE>
datePickerDialog.dismiss();
}
super.onDestroy();
}*/
private void registerUser() {
final String vault_no = vault;
final String my_last_period = txtDate.getText().toString();
final String normal_cycle = txtnormal.getText().toString();
register(vault_no,my_last_period,normal_cycle);
}
public void register(String vault_no , String my_last_period , String normal_cycle){
class RegisterUser extends AsyncTask<String, Integer, JSON> {
ProgressDialog loading;
RequestHandler7 ruc = new RequestHandler7();
@Override
protected void onPreExecute() {
super.onPreExecute();
loading = ProgressDialog.show(Mnst.this, "Please Wait",null, true, true);
}
@SuppressWarnings("deprecation")
@Override
protected void onPostExecute(JSON s) {
super.onPostExecute(s);
loading.dismiss();
Toast.makeText(getApplicationContext(),"Welcome to Miisky",Toast.LENGTH_LONG).show();
SharedPreferences sharedPreferences1 = Mnst.this.getSharedPreferences(SHARED_PREF_NAME, Context.MODE_PRIVATE);
//Creating editor to store values to shared preferences
SharedPreferences.Editor editor = sharedPreferences1.edit();
//Adding values to editor
editor.putBoolean(LOGGEDIN_SHARED_PREF, true);
editor.putString(MYLAST_SHARED_PREF, s.my_last_period);
editor.putString(NORMAL_SHARED_PREF, s.normal_cycle);
editor.putString(REVISED_SHARED_PREF, s.revised_cycle);
editor.putString(NEXT_SHARED_PREF, s.next_period_date);
editor.putString(PREDICTEDSTART_SHARED_PREF, s.predicted_start_date);
editor.putString(PREDICTEDEND_SHARED_PREF, s.predicted_end_date);
editor.apply();
Intent i = new Intent(Mnst.this,DisplayMnst.class);
startActivity(i);
}
@Override
protected JSON doInBackground(String... params) {
HashMap<String, String> data = new HashMap<String,String>();
data.put("vault_no", params[0]);
data.put("my_last_period" , params[1]);
data.put("normal_cycle", params[2]);
JSON result = ruc.sendPostRequest(UPLOAD_URL,data);
return result;
}
}
RegisterUser ru = new RegisterUser();
ru.execute(vault_no,my_last_period,normal_cycle);
}
}
修改
我添加了RequestHandler类..
RequestHandler7
public class RequestHandler7 {
public JSON sendPostRequest(String requestURL,
HashMap<String, String> postDataParams) {
URL url;
StringBuilder sb = new StringBuilder();
try {
url = new URL(requestURL);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(15000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getPostDataString(postDataParams));
writer.flush();
writer.close();
os.close();
int responseCode = conn.getResponseCode();
if (responseCode == HttpsURLConnection.HTTP_OK) {
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
sb = new StringBuilder();
String response;
while ((response = br.readLine()) != null){
sb.append(response);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return new Gson().fromJson(sb.toString(),JSON.class);
}
private String getPostDataString(HashMap<String, String> params) throws UnsupportedEncodingException {
StringBuilder result = new StringBuilder();
boolean first = true;
for (Map.Entry<String, String> entry : params.entrySet()) {
if (first)
first = false;
else
result.append("&");
result.append(URLEncoder.encode(entry.getKey(), "UTF-8"));
result.append("=");
result.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
}
return result.toString();
}
}
日志
这是我的logcat错误..它显示“Activity com.example.android.Mnst已泄漏窗口com.android.internal.policy.impl.PhoneWindow$DecorView@5383cdc0，最初是在这里添加的”
E/WindowManager: Activity com.example.miisky.Mnst has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@5383cdc0 that was originally added here
android.view.WindowLeaked: Activity com.example.miisky.Mnst has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@5383cdc0 that was originally added here
at android.view.ViewRootImpl.<init>(ViewRootImpl.java:374)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:292)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:224)
at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:149)
at android.view.Window$LocalWindowManager.addView(Window.java:547)
at android.app.Dialog.show(Dialog.java:277)
at android.app.ProgressDialog.show(ProgressDialog.java:116)
at android.app.ProgressDialog.show(ProgressDialog.java:104)
at com.example.miisky.Mnst$1RegisterUser.onPreExecute(Mnst.java:132)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
at android.os.AsyncTask.execute(AsyncTask.java:534)
at com.example.miisky.Mnst.register(Mnst.java:178)
at com.example.miisky.Mnst.registerUser(Mnst.java:118)
at com.example.miisky.Mnst.onClick(Mnst.java:95)
at android.view.View.performClick(View.java:4084)
at android.view.View$PerformClick.run(View.java:16966)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：5)
窗口泄露异常有两个原因：
1）当活动上下文不存在时显示对话框，要解决此问题，您应该只显示对话框，确定活动存在：
if(getActivity() != null && !getActivity().isFinishing()) {
Dialog.show(); // if fragment use getActivity().isFinishing() or isAdded() method
}
2）不要适当地关闭对话框，解决使用此代码：
@Override
public void onDestroy(){
super.onDestroy();
if (Dialog != null && Dialog.isShowing()) {
Dialog.dismiss();
}
}
编辑
preExecute（）中的使用此代码
if (!isFinishing() && loading != null) {
loading = ProgressDialog.show(Mnst.this, "Please Wait",null, true, true);
}
和postExecute（）
if (loading != null && loading.isShowing() {
loading.dismiss();
loading = null;
}