我的应用程序没有任何问题，直到关闭我的应用程序并在超过15分钟aprox崩溃后返回，如果我在5分钟后返回我的应用程序似乎都是正确的。我找不到问题请帮忙!!!
logcat的
02-06 20:39:43.534: E/AndroidRuntime(1851): FATAL EXCEPTION: main
02-06 20:39:43.534: E/AndroidRuntime(1851): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.raigo.itivamin/com.raigo.itivamin.Bartabs}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.raigo.itivamin/com.raigo.itivamin.ObjetivosActivity}: java.lang.NullPointerException
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1967)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.access$600(ActivityThread.java:127)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.os.Handler.dispatchMessage(Handler.java:99)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.os.Looper.loop(Looper.java:210)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.main(ActivityThread.java:4441)
02-06 20:39:43.534: E/AndroidRuntime(1851): at java.lang.reflect.Method.invokeNative(Native Method)
02-06 20:39:43.534: E/AndroidRuntime(1851): at java.lang.reflect.Method.invoke(Method.java:511)
02-06 20:39:43.534: E/AndroidRuntime(1851): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
02-06 20:39:43.534: E/AndroidRuntime(1851): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
02-06 20:39:43.534: E/AndroidRuntime(1851): at dalvik.system.NativeStart.main(Native Method)
02-06 20:39:43.534: E/AndroidRuntime(1851): Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.raigo.itivamin/com.raigo.itivamin.ObjetivosActivity}: java.lang.NullPointerException
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1967)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.startActivityNow(ActivityThread.java:1808)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.LocalActivityManager.moveToState(LocalActivityManager.java:135)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.LocalActivityManager.startActivity(LocalActivityManager.java:347)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:737)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.widget.TabHost.setCurrentTab(TabHost.java:401)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.widget.TabHost.addTab(TabHost.java:240)
02-06 20:39:43.534: E/AndroidRuntime(1851): at com.raigo.itivamin.Bartabs.addTab(Bartabs.java:65)
02-06 20:39:43.534: E/AndroidRuntime(1851): at com.raigo.itivamin.Bartabs.setTabs(Bartabs.java:37)
02-06 20:39:43.534: E/AndroidRuntime(1851): at com.raigo.itivamin.Bartabs.onCreate(Bartabs.java:29)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.Activity.performCreate(Activity.java:4465)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1931)
02-06 20:39:43.534: E/AndroidRuntime(1851): ... 11 more
02-06 20:39:43.534: E/AndroidRuntime(1851): Caused by: java.lang.NullPointerException
02-06 20:39:43.534: E/AndroidRuntime(1851): at com.raigo.itivamin.ObjetivosActivity.onCreate(ObjetivosActivity.java:25)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.Activity.performCreate(Activity.java:4465)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
02-06 20:39:43.534: E/AndroidRuntime(1851): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1931)
02-06 20:39:43.534: E/AndroidRuntime(1851): ... 23 more
的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.raigo.itivamin"
android:versionCode="10"
android:versionName="1.1" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="17" />
<application android:name="com.raigo.itivamin.iTIVAapp"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/app_theme" >
<activity
android:name=".IngresodatosActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="Bartabs" android:configChanges="orientation|screenSize"></activity>
<activity android:name=".ObjetivosActivity" android:configChanges="orientation|screenSize"></activity>
<activity android:name=".BombaActivity" android:configChanges="orientation|screenSize"></activity>
<activity android:name=".OpioideActivity"
android:theme="@android:style/Theme.Dialog"></activity>
<activity android:name=".HipnoticoActivity"
android:theme="@android:style/Theme.Dialog"></activity>
<activity android:name="org.achartengine.GraphicalActivity" />
<activity android:name=".GraficaActivity" android:configChanges="orientation|screenSize"></activity>
<activity android:name=".SimuladorActivity" android:configChanges="orientation|screenSize"></activity>
<activity android:name=".AyudaActivity" android:configChanges="orientation|screenSize"></activity>
<service android:name=".SomeService1"></service>
</application>
</manifest>
Bartabs.java
package com.raigo.itivamin;
import android.app.TabActivity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TabHost;
import android.widget.TextView;
/**
* @author Adil Soomro
*
*/
@SuppressWarnings("deprecation")
public class Bartabs extends TabActivity {
/** Called when the activity is first created. */
//boolean simulador =false;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
setContentView(R.layout.main);
//Bundle extras = getIntent().getExtras();
//simulador= extras.getBoolean("simulador");
setTabs() ;
}
private void setTabs()
{
if (((iTIVAapp)getApplication()).simulador==false){
addTab(getString(R.string.target), R.drawable.tab_objetivos, ObjetivosActivity.class);
addTab(getString(R.string.pump), R.drawable.tab_bomba, BombaActivity.class);
addTab2(getString(R.string.pk_pd), R.drawable.tab_chart,GraficaActivity.class);
addTab(getString(R.string.help), R.drawable.tab_help, AyudaActivity.class);
} else{
addTab(getString(R.string.scheme), R.drawable.tab_bomba, SimuladorActivity.class);
addTab2(getString(R.string.pk_pd), R.drawable.tab_chart,GraficaActivity.class);
addTab(getString(R.string.help), R.drawable.tab_help, AyudaActivity.class);
}
}
private void addTab(String labelId, int drawableId, Class<?> c)
{
TabHost tabHost = getTabHost();
Intent intent = new Intent(this, c);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
//tabHost.setOnTabChangedListener(this);
}
private void addTab2(String labelId, int drawableId, Class<?> c)
{
TabHost tabHost = getTabHost();
Intent intent = new Intent(this, c).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
//tabHost.setOnTabChangedListener(this);
}
//@Override
//public void onTabChanged(String tabId) {
// if (tabId.equals("tabPK/PD")==true && (((iTIVAapp)getApplication()).cambio==true)){
// LocalActivityManager manager = getLocalActivityManager();
// manager.destroyActivity("tabPK/PD", true);
// manager.startActivity("tabPK/PD", new Intent(this, GraficaActivity.class));
// }
//}
}
ObjetivosActivity.java
package com.raigo.itivamin;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.NumberPicker;
import android.widget.NumberPicker.OnValueChangeListener;
import android.widget.Toast;
public class ObjetivosActivity extends Activity implements OnValueChangeListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
if (((iTIVAapp)getApplication()).modelo2.equals("halogenado")==false){
setContentView(R.layout.objetivospage_sep);
}
else
{
setContentView(R.layout.objetivospage_bal);
}
//valores por defecto
((iTIVAapp)getApplication()).Tinduccion=5;
((iTIVAapp)getApplication()).tcx=180;
((iTIVAapp)getApplication()).objetivo="efecto";
//((iTIVAapp)getApplication()).deltainfusion=15;
((iTIVAapp)getApplication()).cambio=true;
final Button btn_opt = (Button)findViewById(R.id.button_optimizar);
if (((iTIVAapp)getApplication()).mezclado==true){
btn_opt.setVisibility(View.VISIBLE);
} else if (((iTIVAapp)getApplication()).modelo2.equals("halogenado")==false) {
btn_opt.setVisibility(View.GONE);
}
/////////
final Button btn_ind = (Button)findViewById(R.id.button_induccion);
btn_ind.setText((int)((iTIVAapp)getApplication()).Tinduccion+" "+getString(R.string._min));
//se crean los objetivos del farmaco 1
final NumberPicker np_ini1 = (NumberPicker) findViewById(R.id.numberPicker_ini1);
final NumberPicker np_man1 = (NumberPicker) findViewById(R.id.numberPicker_man1);
final NumberPicker np_sal1 = (NumberPicker) findViewById(R.id.numberPicker_sal1);
String[] nums = new String[120];
for(int i=1; i<nums.length+1; i++)
nums[i-1] = Double.toString(i/10.0);
np_ini1.setMaxValue(nums.length-1);
np_ini1.setMinValue(0);
np_ini1.setDisplayedValues(nums);
np_ini1.setValue((int) (((iTIVAapp)getApplication()).ini1*10-1));
np_ini1.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_ini1.setOnValueChangedListener(this);
np_man1.setMaxValue(nums.length-1);
np_man1.setMinValue(0);
np_man1.setDisplayedValues(nums);
np_man1.setValue((int) (((iTIVAapp)getApplication()).man1*10-1));
np_man1.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_man1.setOnValueChangedListener(this);
np_sal1.setMaxValue(nums.length-1);
np_sal1.setMinValue(0);
np_sal1.setDisplayedValues(nums);
np_sal1.setValue((int) (((iTIVAapp)getApplication()).sal1*10-1));
np_sal1.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_sal1.setOnValueChangedListener(this);
if (((iTIVAapp)getApplication()).modelo2.equals("schnider") && ((iTIVAapp)getApplication()).mezclado==false){
//se crean los objetivos del farmaco 2
final NumberPicker np_ini2 = (NumberPicker) findViewById(R.id.numberPicker_ini2);
final NumberPicker np_man2 = (NumberPicker) findViewById(R.id.numberPicker_man2);
final NumberPicker np_sal2 = (NumberPicker) findViewById(R.id.numberPicker_sal2);
String[] nums2 = new String[80];
for(int i=1; i<nums2.length+1; i++)
nums2[i-1] = Double.toString(i/10.0);
np_ini2.setMaxValue(nums2.length-1);
np_ini2.setMinValue(0);
np_ini2.setDisplayedValues(nums2);
np_ini2.setValue((int) (((iTIVAapp)getApplication()).ini2*10-1));
np_ini2.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_ini2.setOnValueChangedListener(this);
np_man2.setMaxValue(nums2.length-1);
np_man2.setMinValue(0);
np_man2.setDisplayedValues(nums2);
np_man2.setValue((int) (((iTIVAapp)getApplication()).man2*10-1));
np_man2.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_man2.setOnValueChangedListener(this);
np_sal2.setMaxValue(nums2.length-1);
np_sal2.setMinValue(0);
np_sal2.setDisplayedValues(nums2);
np_sal2.setValue((int) (((iTIVAapp)getApplication()).sal2*10-1));
np_sal2.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_sal2.setOnValueChangedListener(this);
}
else if (((iTIVAapp)getApplication()).mezclado==true){
//se crean los objetivos del farmaco 2
final NumberPicker np_ini2 = (NumberPicker) findViewById(R.id.numberPicker_ini2);
final NumberPicker np_man2 = (NumberPicker) findViewById(R.id.numberPicker_man2);
final NumberPicker np_sal2 = (NumberPicker) findViewById(R.id.numberPicker_sal2);
String[] nums2 = new String[81];
for(int i=1; i<nums2.length; i++)
nums2[i-1] = Double.toString(i/10.0);
nums2[80] = "-";
np_ini2.setMaxValue(nums2.length-1);
np_ini2.setMinValue(0);
np_ini2.setDisplayedValues(nums2);
np_ini2.setValue(80);
np_ini2.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_ini2.setOnValueChangedListener(this);
np_man2.setMaxValue(nums2.length-1);
np_man2.setMinValue(0);
np_man2.setDisplayedValues(nums2);
np_man2.setValue(80);
np_man2.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_man2.setOnValueChangedListener(this);
np_sal2.setMaxValue(nums2.length-1);
np_sal2.setMinValue(0);
np_sal2.setDisplayedValues(nums2);
np_sal2.setValue(80);
np_sal2.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_sal2.setOnValueChangedListener(this);
}
else if (((iTIVAapp)getApplication()).modelo2.equals("halogenado")){
NumberPicker np_mac = (NumberPicker) findViewById(R.id.numberPicker_mac);
String[] nums2 = new String[30];
for(int i=1; i<nums2.length+1; i++)
nums2[i-1] = Double.toString(i/10.0);
np_mac.setMaxValue(nums2.length-1);
np_mac.setMinValue(0);
np_mac.setDisplayedValues(nums2);
np_mac.setValue(0);
np_mac.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
np_mac.setOnValueChangedListener(this);
}
}
@Override
protected void onResume() {
super.onResume();
NumberPicker np_ini1 = (NumberPicker) findViewById(R.id.numberPicker_ini1);
NumberPicker np_man1 = (NumberPicker) findViewById(R.id.numberPicker_man1);
NumberPicker np_sal1 = (NumberPicker) findViewById(R.id.numberPicker_sal1);
np_ini1.setValue((int) (((iTIVAapp)getApplication()).ini1*10-1));
np_man1.setValue((int) (((iTIVAapp)getApplication()).man1*10-1));
np_sal1.setValue((int) (((iTIVAapp)getApplication()).sal1*10-1));
if (((iTIVAapp)getApplication()).modelo2.equals("halogenado")==false){
NumberPicker np_ini2 = (NumberPicker) findViewById(R.id.numberPicker_ini2);
NumberPicker np_man2 = (NumberPicker) findViewById(R.id.numberPicker_man2);
NumberPicker np_sal2 = (NumberPicker) findViewById(R.id.numberPicker_sal2);
np_ini2.setValue((int) (((iTIVAapp)getApplication()).ini2*10-1));
np_man2.setValue((int) (((iTIVAapp)getApplication()).man2*10-1));
np_sal2.setValue((int) (((iTIVAapp)getApplication()).sal2*10-1));
if (((iTIVAapp)getApplication()).mezclado==true){
if (((iTIVAapp)getApplication()).ini2==0 && ((iTIVAapp)getApplication()).man2==0){
np_ini2.setValue(80);
np_man2.setValue(80);
} else {
np_ini2.setValue((int) (((iTIVAapp)getApplication()).ini2*10-1));
np_man2.setValue((int) (((iTIVAapp)getApplication()).man2*10-1));
}
np_sal2.setValue(80);
}
}
}
.....
答案 0 :(得分：1)
Caused by: java.lang.NullPointerException
at com.raigo.itivamin.ObjetivosActivity.onCreate(ObjetivosActivity.java:25)
错误似乎指向这一行：
if (((iTIVAapp)getApplication()).modelo2.equals("halogenado")==false){
因此(iTIVAapp)getApplication()为空或.modelo2为空。您可以使用调试器或LogCat语句测试哪个值为null。
如果modelo2可能为空，也可能不为空，您可以向后写下您的条件：
if(!"halogenado".equals(((iTIVAapp)getApplication()).modelo2)){
// "!" means "!= true" which must mean "false" for a boolean