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我將我的應用程序中的佈局從RelativLayout更改爲RelativLayout作爲DrawerLayout的子項。一切工作正常，除onClick()MainActivity.java內的所有內容。按下按鈕button1後，計算結果爲NaN，此前工作正常。它必須對佈局的改變做些事情。我不知道是什麼原因導致此問題。 也許有人可以幫助我？ GitHub的：https://github.com/ephlox/GradesCalculator2Android應用程序：更改爲DrawerLayout後，calc函數不起作用
MainActivity.java
package com.lob.gradescalculator;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.preference.PreferenceManager;
import android.support.annotation.Nullable;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import android.view.MenuInflater;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
Toolbar toolbar;
DrawerLayout drawerLayoutgesamt;
ActionBarDrawerToggle drawerToggle;
int sum = 0;
int ects = 0;
float mark = 0;
NumberFormat numberFormat = new DecimalFormat("0.00");
Button button1;
TextView textView1;
EditText editText1;
EditText editText2;
EditText editText3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar1);
setSupportActionBar(toolbar);
drawerLayoutgesamt = (DrawerLayout) findViewById(R.id.drawerlayoutgesamt);
drawerToggle = new ActionBarDrawerToggle(MainActivity.this, drawerLayoutgesamt, R.string.auf, R.string.zu);
drawerLayoutgesamt.setDrawerListener(drawerToggle);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
drawerToggle.syncState();
button1 = (Button)findViewById(R.id.button1);
textView1 = (TextView)findViewById(R.id.textView1);
editText1 = (EditText)findViewById(R.id.editTextGDI);
editText2 = (EditText)findViewById(R.id.editTextGDW);
editText3 = (EditText)findViewById(R.id.editTextProgrammieren1);
loadSavedPreferences();
button1.setOnClickListener(
new Button.OnClickListener() {
public void onClick(View v){
ViewGroup group = (ViewGroup)findViewById(R.id.activity_main);
for (int i = 0, count = group.getChildCount(); i < count; ++i) {
View view = group.getChildAt(i);
if (view instanceof EditText) {
if(view.equals(editText1) && !(editText1.getText().toString().matches(""))){ //GDI
System.out.println("edittext1");
ects += 5;
try{ sum += Integer.parseInt(editText1.getText().toString()) *5; } catch(NumberFormatException n){}
}
else if(view.equals(editText2)&& !(editText2.getText().toString().matches(""))){ //GDW
System.out.println("edittext2");
ects += 5;
try{ sum += Integer.parseInt(editText2.getText().toString()) *5; } catch(NumberFormatException n){}
}
else if(view.equals(editText3)&& !(editText3.getText().toString().matches(""))){
System.out.println("edittext3");
ects += 7;
try{ sum += Integer.parseInt(editText3.getText().toString()) *7; } catch(NumberFormatException n){}
}
}
}
mark = (float)sum/(float)ects;
textView1.setText(String.valueOf(numberFormat.format(mark)));
savePreferences("editText1", editText1.getText().toString());
savePreferences("editText2", editText2.getText().toString());
savePreferences("editText3", editText3.getText().toString());
sum = 0;
ects = 0;
mark = 0;
}
}
);
}
private void loadSavedPreferences() {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(this);
editText1.setText(sharedPreferences.getString("editText1", ""));
editText2.setText(sharedPreferences.getString("editText2", ""));
editText3.setText(sharedPreferences.getString("editText3", ""));
}
private void savePreferences(String key, String value) {
SharedPreferences sharedPreferences = PreferenceManager
.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(key, value);
editor.commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item){
int id = item.getItemId();
if(id == R.id.action_settings){
return true;
}
if(drawerToggle.onOptionsItemSelected(item)){
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onPostCreate(@Nullable Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(new Configuration());
}
}
activity_main.xml中
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.lob.gradescalculator.MainActivity">
<android.support.v4.widget.DrawerLayout
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:id="@+id/drawerlayoutgesamt"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true">
<!-- Activity Layout für Hauptbereich -->
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/activitylayout"
>
<android.support.v7.widget.Toolbar
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/toolbar1"
android:background="#c6d9ff"
android:fitsSystemWindows="true"
>
</android.support.v7.widget.Toolbar>
<!-- TextViews -->
<TextView
android:id="@+id/WIF_Title"
android:text="Wirtschaftsinformatik B.Sc."
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="25dp"
android:layout_x="23dp"
android:layout_y="200dp"
android:layout_below="@+id/toolbar1"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"/>
<TextView
android:id="@+id/textViewGDW"
android:text="Grundlagen der Wirtschaftsinformatik"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textStyle="normal|bold"
android:textAlignment="textStart"
android:layout_below="@+id/textViewGDI"
android:layout_marginTop="30dp"
android:layout_x="45dp"
android:layout_y="344dp"
android:layout_alignStart="@+id/textViewGDI" />
<TextView
android:id="@+id/TextViewProgrammieren1"
android:text="Programmieren 1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textStyle="normal|bold"
android:textAlignment="textStart"
android:layout_below="@+id/textViewGDW"
android:layout_marginTop="32dp"
android:layout_x="113dp"
android:layout_y="238dp"
android:layout_alignStart="@+id/textViewGDW" />
<!-- EditTexts -->
<!-- Buttons -->
<EditText
android:id="@+id/editTextGDI"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_below="@+id/WIF_Title"
android:layout_alignParentEnd="true"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:inputType="number"
android:textColorHint="@drawable/selector"
android:background="@drawable/roundedborders"
android:digits="12345"
android:maxLength="1"
/>
<TextView
android:id="@+id/textViewGDI"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Grundlagen der Informatik"
android:textAppearance="@style/TextAppearance.AppCompat.Body1"
android:textStyle="normal|bold"
android:textAlignment="center"
android:layout_x="125dp"
android:layout_y="184dp"
android:layout_below="@+id/WIF_Title"
android:layout_alignParentStart="true"
android:layout_marginStart="3dp"
android:layout_marginTop="15dp"/>
<EditText
android:id="@+id/editTextGDW"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="number"
android:textColorHint="@drawable/selector"
android:background="@drawable/roundedborders"
android:ems="10"
android:layout_x="69dp"
android:layout_y="91dp"
android:layout_alignBaseline="@+id/textViewGDW"
android:layout_alignBottom="@+id/textViewGDW"
android:layout_alignStart="@+id/editTextGDI"
android:layout_alignEnd="@+id/editTextGDI" />
<EditText
android:id="@+id/editTextProgrammieren1"
android:layout_height="wrap_content"
android:inputType="number"
android:textColorHint="@drawable/selector"
android:background="@drawable/roundedborders"
android:ems="10"
android:layout_x="78dp"
android:layout_y="264dp"
android:layout_width="50dp"
android:layout_alignBaseline="@+id/TextViewProgrammieren1"
android:layout_alignBottom="@+id/TextViewProgrammieren1"
android:layout_alignStart="@+id/editTextGDW"
android:layout_alignEnd="@+id/editTextGDW" />
<TextView
android:id="@+id/textView1"
android:text="..."
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="71dp"
android:layout_x="23dp"
android:layout_y="200dp"
android:layout_above="@+id/button1"
android:layout_centerHorizontal="true" />
<Button
android:id="@+id/button1"
android:text="Berechne"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="75dp"
android:layout_x="128dp"
android:layout_y="442dp"
android:layout_alignParentBottom="true"
android:layout_alignEnd="@+id/textViewGDW" />
</RelativeLayout>
<!-- Drawerlayout für links -->
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/drayerlayoutsingle"
android:layout_gravity="start"
android:background="#fff">
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
你能發佈logcat的實際錯誤或日誌嗎？你的代碼看起來不錯。如果你給我具體的錯誤，那麼也許我會幫助你。 –
我會如果是一些。 0錯誤，0警告，沒有什麼特別的logcat。這使我最困惑...... – lob
嘗試通過調試或打印每個塊中的結果來查看所有條件，以查看問題出在哪裏。我今天忙於一些重要的工作。但是我會在隊列中添加您的問題，嘗試解決問題，否則我會在幾天內使用改進的代碼回覆您。 –