不幸的是，android emulator上的应用程序已停止
这是我的main.java不幸的是，android emulator上的应用程序已停止,android,android-edittext,Android,Android Edittext,这是我的main.java package com.example.citylife; import android.support.v7.app.ActionBarActivity; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android
package com.example.citylife;
import android.support.v7.app.ActionBarActivity;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
Button btn1,btn2,btn3,btn4,btn5,btn6,btn7;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1=(Button) findViewById(R.id.button1);
btn2=(Button) findViewById(R.id.button2);
btn3=(Button) findViewById(R.id.button3);
btn4=(Button) findViewById(R.id.button4);
btn5=(Button) findViewById(R.id.button5);
btn6=(Button) findViewById(R.id.button6);
btn7=(Button) findViewById(R.id.button7);
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj1=new Intent(MainActivity.this,Hotels.class);
startActivity(obj1);
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj2=new Intent(MainActivity.this,Cabs.class);
startActivity(obj2);
}
});
btn3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj3=new Intent(MainActivity.this,Hospitals.class);
startActivity(obj3);
}
});
btn4.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj4=new Intent(MainActivity.this,Monuments.class);
startActivity(obj4);
}
});
btn5.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj5=new Intent(MainActivity.this,Theatres.class);
startActivity(obj5);
}
});
btn6.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj6=new Intent(MainActivity.this,Malls.class);
startActivity(obj6);
}
});
btn7.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent obj7=new Intent(MainActivity.this,ExpenseCalculator.class);
startActivity(obj7);
}
});
}
@Override
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) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnCount="1"
android:rowCount="12"
android:background="@color/skyblue">
<Button
android:id="@+id/button1"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_marginTop="30dp"
android:layout_row="0"
android:text="HOTELS"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
<Button
android:id="@+id/button2"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_marginTop="15dp"
android:layout_row="1"
android:text="CABS"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
<Button
android:id="@+id/button3"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_row="2"
android:text="HOSPITALS"
android:layout_marginTop="15dp"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
<Button
android:id="@+id/button4"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_row="3"
android:text="MONUMENTS"
android:layout_marginTop="15dp"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
<Button
android:id="@+id/button5"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_row="4"
android:text="THEATRES"
android:layout_marginTop="15dp"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
<Button
android:id="@+id/button6"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_row="5"
android:text="MALLS"
android:layout_marginTop="15dp"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
<Button
android:id="@+id/button7"
android:layout_width="290dp"
android:layout_column="0"
android:layout_gravity="center"
android:layout_row="6"
android:text="EXPENSE CALCULATOR"
android:layout_marginTop="15dp"
android:textStyle="bold|italic"
android:textColor="@color/darkblue"/>
06-27 13:39:10.275: D/gralloc_goldfish(2013): Emulator without GPU emulation detected.
06-27 13:43:57.694: D/dalvikvm(2013): GC_CONCURRENT freed 196K, 11% free 2598K/2920K, paused 7ms+34ms, total 259ms
06-27 13:43:57.844: D/AndroidRuntime(2013): Shutting down VM
06-27 13:43:57.844: W/dalvikvm(2013): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-27 13:43:57.914: E/AndroidRuntime(2013): FATAL EXCEPTION: main
06-27 13:43:57.914: E/AndroidRuntime(2013): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citylife/com.example.citylife.ExpenseCalculator}: java.lang.NumberFormatException: Invalid int: ""
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.os.Looper.loop(Looper.java:137)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 13:43:57.914: E/AndroidRuntime(2013): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 13:43:57.914: E/AndroidRuntime(2013): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 13:43:57.914: E/AndroidRuntime(2013): at dalvik.system.NativeStart.main(Native Method)
06-27 13:43:57.914: E/AndroidRuntime(2013): Caused by: java.lang.NumberFormatException: Invalid int: ""
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.Integer.invalidInt(Integer.java:138)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.Integer.parseInt(Integer.java:359)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.Integer.parseInt(Integer.java:332)
06-27 13:43:57.914: E/AndroidRuntime(2013): at com.example.citylife.ExpenseCalculator.onCreate(ExpenseCalculator.java:30)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.Activity.performCreate(Activity.java:5104)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 13:43:57.914: E/AndroidRuntime(2013): ... 11 more
06-27 13:44:03.124: I/Process(2013): Sending signal. PID: 2013 SIG: 9
06-27 13:59:01.284: D/gralloc_goldfish(2367): Emulator without GPU emulation detected.
06-27 13:59:25.764: D/dalvikvm(2367): GC_CONCURRENT freed 169K, 11% free 2620K/2920K, paused 9ms+28ms, total 273ms
06-27 13:59:25.974: D/AndroidRuntime(2367): Shutting down VM
06-27 13:59:25.974: W/dalvikvm(2367): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-27 13:59:26.044: E/AndroidRuntime(2367): FATAL EXCEPTION: main
06-27 13:59:26.044: E/AndroidRuntime(2367): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citylife/com.example.citylife.ExpenseCalculator}: java.lang.NumberFormatException: Invalid int: ""
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.os.Looper.loop(Looper.java:137)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 13:59:26.044: E/AndroidRuntime(2367): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 13:59:26.044: E/AndroidRuntime(2367): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 13:59:26.044: E/AndroidRuntime(2367): at dalvik.system.NativeStart.main(Native Method)
06-27 13:59:26.044: E/AndroidRuntime(2367): Caused by: java.lang.NumberFormatException: Invalid int: ""
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.Integer.invalidInt(Integer.java:138)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.Integer.parseInt(Integer.java:359)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.Integer.parseInt(Integer.java:332)
06-27 13:59:26.044: E/AndroidRuntime(2367): at com.example.citylife.ExpenseCalculator.onCreate(ExpenseCalculator.java:31)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.Activity.performCreate(Activity.java:5104)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 13:59:26.044: E/AndroidRuntime(2367): ... 11 more
06-27 13:59:31.525: I/Process(2367): Sending signal. PID: 2367 SIG: 9
06-27 14:16:09.574: D/gralloc_goldfish(2726): Emulator without GPU emulation detected.
06-27 14:18:48.964: D/dalvikvm(2726): GC_CONCURRENT freed 170K, 11% free 2611K/2912K, paused 10ms+30ms, total 209ms
06-27 14:18:49.036: D/AndroidRuntime(2726): Shutting down VM
06-27 14:18:49.044: W/dalvikvm(2726): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-27 14:18:49.114: E/AndroidRuntime(2726): FATAL EXCEPTION: main
06-27 14:18:49.114: E/AndroidRuntime(2726): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citylife/com.example.citylife.ExpenseCalculator}: java.lang.NumberFormatException: Invalid int: ""
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.os.Looper.loop(Looper.java:137)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 14:18:49.114: E/AndroidRuntime(2726): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 14:18:49.114: E/AndroidRuntime(2726): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 14:18:49.114: E/AndroidRuntime(2726): at dalvik.system.NativeStart.main(Native Method)
06-27 14:18:49.114: E/AndroidRuntime(2726): Caused by: java.lang.NumberFormatException: Invalid int: ""
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.Integer.invalidInt(Integer.java:138)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.Integer.parseInt(Integer.java:359)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.Integer.parseInt(Integer.java:332)
06-27 14:18:49.114: E/AndroidRuntime(2726): at com.example.citylife.ExpenseCalculator.onCreate(ExpenseCalculator.java:43)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.Activity.performCreate(Activity.java:5104)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 14:18:49.114: E/AndroidRuntime(2726): ... 11 more
06-27 14:18:57.084: I/Process(2726): Sending signal. PID: 2726 SIG: 9
问题是，从Edittext中检索值时，Edittext为null。您尚未将视图指定给它 分配视图后，只需移动代码即可检索值，如下面的代码所示
public class ExpenseCalculator extends Activity {
EditText ed1,ed2,ed3,ed4,ed5,ed6,ed7;
Button btn1,btn2;
TextView tt1,tt2;
int a1,b2,c3,d4,e5,f6,g7; //these variables will be assigned 0
//Removed the code from here
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_expense_calculator);
ed1=(EditText) findViewById(R.id.editText1);
ed2=(EditText) findViewById(R.id.editText2);
ed3=(EditText) findViewById(R.id.editText3);
ed4=(EditText) findViewById(R.id.editText4);
ed5=(EditText) findViewById(R.id.editText5);
ed6=(EditText) findViewById(R.id.editText6);
//added the code here after ed1,ed2,ed3,ed4,ed5,ed6 is assigned
if(!ed1.getText().toString().equals(""))
a1=Integer.parseInt(ed1.getText().toString());
if(!ed2.getText().toString().equals(""))
b2=Integer.parseInt(ed2.getText().toString());
if(!ed3.getText().toString().equals(""))
c3=Integer.parseInt(ed3.getText().toString());
if(!ed4.getText().toString().equals(""))
d4=Integer.parseInt(ed4.getText().toString());
if(!ed5.getText().toString().equals(""))
e5=Integer.parseInt(ed5.getText().toString());
if(!ed6.getText().toString().equals(""))
f6=Integer.parseInt(ed6.getText().toString());
if(!ed7.getText().toString().equals(""))
g7=Integer.parseInt(ed7.getText().toString());
int total = a1 + b2 + c3 + d4 + e5 + f6;
将int变量初始化为0。 因此，即使您的edittext为空，也会有一个默认值 或者在进行任何类型的数据操作之前，先对值进行一些检查
public class ExpenseCalculator extends Activity {
EditText ed1,ed2,ed3,ed4,ed5,ed6,ed7;
Button btn1,btn2;
TextView tt1,tt2;
//initialize to zero
int a1,b2,c3,d4,e5,f6,g7,total = 0;
/* this code below already takes input from edit text during intialization of code hence it's probably null
int a1=Integer.parseInt(ed1.getText().toString());
int b2=Integer.parseInt(ed2.getText().toString());
int c3=Integer.parseInt(ed3.getText().toString());
int d4=Integer.parseInt(ed4.getText().toString());
int e5=Integer.parseInt(ed5.getText().toString());
int f6=Integer.parseInt(ed6.getText().toString());
int g7=Integer.parseInt(ed7.getText().toString());
int total = a1 + b2 + c3 + d4 + e5 + f6;
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_expense_calculator);
ed1=(EditText) findViewById(R.id.editText1);
ed2=(EditText) findViewById(R.id.editText2);
ed3=(EditText) findViewById(R.id.editText3);
ed4=(EditText) findViewById(R.id.editText4);
ed5=(EditText) findViewById(R.id.editText5);
ed6=(EditText) findViewById(R.id.editText6);
ed7=(EditText) findViewById(R.id.editText7);
btn1=(Button) findViewById(R.id.button1);
btn2=(Button) findViewById(R.id.button2);
tt1=(TextView) findViewById(R.id.textView7);
tt2=(TextView) findViewById(R.id.TextView01);
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
tt1.setText(Integer.toString(total));
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//getting the input only when button clicked
a1=Integer.parseInt(ed1.getText().toString());
b2=Integer.parseInt(ed2.getText().toString());
c3=Integer.parseInt(ed3.getText().toString());
d4=Integer.parseInt(ed4.getText().toString());
e5=Integer.parseInt(ed5.getText().toString());
f6=Integer.parseInt(ed6.getText().toString());
g7=Integer.parseInt(ed7.getText().toString());
total = a1 + b2 + c3 + d4 + e5 + f6;
if(g7>total)
tt2.setText("Go for it !!");
else
tt2.setText("Out of budget :(");
}
});
}
新错误是因为您没有在其中一个edittext中输入值。确保在所有编辑文本中输入值。如果默认情况下未输入值，则值为且integer不能接受我已编辑了我的问题并最终粘贴了日志，请检查我已将gettext应用于所有edittext变量，因此没有edittext框不会接受值我已对logcat提出质疑，请检查你必须移动声明a1、b2，…等，如我的回答所示。我相信你没有那样做。如果没有为变量赋值，则会导致变量为0。int a1、b2、c3、d4、e5、f6、g7；您试图将一个空值转换为一个数字，Stacktrace会引导您找到确切的答案和代码行。了解如何读取堆栈非常重要，值得一读。ExpenseCalculator.java:30-这告诉我发生这种情况的类和行号。我已将所有int变量初始化为零，但错误仍然存在：
06-27 13:39:10.275: D/gralloc_goldfish(2013): Emulator without GPU emulation detected.
06-27 13:43:57.694: D/dalvikvm(2013): GC_CONCURRENT freed 196K, 11% free 2598K/2920K, paused 7ms+34ms, total 259ms
06-27 13:43:57.844: D/AndroidRuntime(2013): Shutting down VM
06-27 13:43:57.844: W/dalvikvm(2013): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-27 13:43:57.914: E/AndroidRuntime(2013): FATAL EXCEPTION: main
06-27 13:43:57.914: E/AndroidRuntime(2013): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citylife/com.example.citylife.ExpenseCalculator}: java.lang.NumberFormatException: Invalid int: ""
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.os.Looper.loop(Looper.java:137)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 13:43:57.914: E/AndroidRuntime(2013): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 13:43:57.914: E/AndroidRuntime(2013): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 13:43:57.914: E/AndroidRuntime(2013): at dalvik.system.NativeStart.main(Native Method)
06-27 13:43:57.914: E/AndroidRuntime(2013): Caused by: java.lang.NumberFormatException: Invalid int: ""
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.Integer.invalidInt(Integer.java:138)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.Integer.parseInt(Integer.java:359)
06-27 13:43:57.914: E/AndroidRuntime(2013): at java.lang.Integer.parseInt(Integer.java:332)
06-27 13:43:57.914: E/AndroidRuntime(2013): at com.example.citylife.ExpenseCalculator.onCreate(ExpenseCalculator.java:30)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.Activity.performCreate(Activity.java:5104)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 13:43:57.914: E/AndroidRuntime(2013): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 13:43:57.914: E/AndroidRuntime(2013): ... 11 more
06-27 13:44:03.124: I/Process(2013): Sending signal. PID: 2013 SIG: 9
06-27 13:59:01.284: D/gralloc_goldfish(2367): Emulator without GPU emulation detected.
06-27 13:59:25.764: D/dalvikvm(2367): GC_CONCURRENT freed 169K, 11% free 2620K/2920K, paused 9ms+28ms, total 273ms
06-27 13:59:25.974: D/AndroidRuntime(2367): Shutting down VM
06-27 13:59:25.974: W/dalvikvm(2367): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-27 13:59:26.044: E/AndroidRuntime(2367): FATAL EXCEPTION: main
06-27 13:59:26.044: E/AndroidRuntime(2367): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citylife/com.example.citylife.ExpenseCalculator}: java.lang.NumberFormatException: Invalid int: ""
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.os.Looper.loop(Looper.java:137)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 13:59:26.044: E/AndroidRuntime(2367): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 13:59:26.044: E/AndroidRuntime(2367): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 13:59:26.044: E/AndroidRuntime(2367): at dalvik.system.NativeStart.main(Native Method)
06-27 13:59:26.044: E/AndroidRuntime(2367): Caused by: java.lang.NumberFormatException: Invalid int: ""
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.Integer.invalidInt(Integer.java:138)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.Integer.parseInt(Integer.java:359)
06-27 13:59:26.044: E/AndroidRuntime(2367): at java.lang.Integer.parseInt(Integer.java:332)
06-27 13:59:26.044: E/AndroidRuntime(2367): at com.example.citylife.ExpenseCalculator.onCreate(ExpenseCalculator.java:31)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.Activity.performCreate(Activity.java:5104)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 13:59:26.044: E/AndroidRuntime(2367): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 13:59:26.044: E/AndroidRuntime(2367): ... 11 more
06-27 13:59:31.525: I/Process(2367): Sending signal. PID: 2367 SIG: 9
06-27 14:16:09.574: D/gralloc_goldfish(2726): Emulator without GPU emulation detected.
06-27 14:18:48.964: D/dalvikvm(2726): GC_CONCURRENT freed 170K, 11% free 2611K/2912K, paused 10ms+30ms, total 209ms
06-27 14:18:49.036: D/AndroidRuntime(2726): Shutting down VM
06-27 14:18:49.044: W/dalvikvm(2726): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
06-27 14:18:49.114: E/AndroidRuntime(2726): FATAL EXCEPTION: main
06-27 14:18:49.114: E/AndroidRuntime(2726): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.citylife/com.example.citylife.ExpenseCalculator}: java.lang.NumberFormatException: Invalid int: ""
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.access$600(ActivityThread.java:141)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.os.Handler.dispatchMessage(Handler.java:99)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.os.Looper.loop(Looper.java:137)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.main(ActivityThread.java:5041)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.reflect.Method.invokeNative(Native Method)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.reflect.Method.invoke(Method.java:511)
06-27 14:18:49.114: E/AndroidRuntime(2726): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-27 14:18:49.114: E/AndroidRuntime(2726): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-27 14:18:49.114: E/AndroidRuntime(2726): at dalvik.system.NativeStart.main(Native Method)
06-27 14:18:49.114: E/AndroidRuntime(2726): Caused by: java.lang.NumberFormatException: Invalid int: ""
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.Integer.invalidInt(Integer.java:138)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.Integer.parseInt(Integer.java:359)
06-27 14:18:49.114: E/AndroidRuntime(2726): at java.lang.Integer.parseInt(Integer.java:332)
06-27 14:18:49.114: E/AndroidRuntime(2726): at com.example.citylife.ExpenseCalculator.onCreate(ExpenseCalculator.java:43)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.Activity.performCreate(Activity.java:5104)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
06-27 14:18:49.114: E/AndroidRuntime(2726): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
06-27 14:18:49.114: E/AndroidRuntime(2726): ... 11 more
06-27 14:18:57.084: I/Process(2726): Sending signal. PID: 2726 SIG: 9
public class ExpenseCalculator extends Activity {
EditText ed1,ed2,ed3,ed4,ed5,ed6,ed7;
Button btn1,btn2;
TextView tt1,tt2;
int a1,b2,c3,d4,e5,f6,g7; //these variables will be assigned 0
//Removed the code from here
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_expense_calculator);
ed1=(EditText) findViewById(R.id.editText1);
ed2=(EditText) findViewById(R.id.editText2);
ed3=(EditText) findViewById(R.id.editText3);
ed4=(EditText) findViewById(R.id.editText4);
ed5=(EditText) findViewById(R.id.editText5);
ed6=(EditText) findViewById(R.id.editText6);
//added the code here after ed1,ed2,ed3,ed4,ed5,ed6 is assigned
if(!ed1.getText().toString().equals(""))
a1=Integer.parseInt(ed1.getText().toString());
if(!ed2.getText().toString().equals(""))
b2=Integer.parseInt(ed2.getText().toString());
if(!ed3.getText().toString().equals(""))
c3=Integer.parseInt(ed3.getText().toString());
if(!ed4.getText().toString().equals(""))
d4=Integer.parseInt(ed4.getText().toString());
if(!ed5.getText().toString().equals(""))
e5=Integer.parseInt(ed5.getText().toString());
if(!ed6.getText().toString().equals(""))
f6=Integer.parseInt(ed6.getText().toString());
if(!ed7.getText().toString().equals(""))
g7=Integer.parseInt(ed7.getText().toString());
int total = a1 + b2 + c3 + d4 + e5 + f6;
public class ExpenseCalculator extends Activity {
EditText ed1,ed2,ed3,ed4,ed5,ed6,ed7;
Button btn1,btn2;
TextView tt1,tt2;
//initialize to zero
int a1,b2,c3,d4,e5,f6,g7,total = 0;
/* this code below already takes input from edit text during intialization of code hence it's probably null
int a1=Integer.parseInt(ed1.getText().toString());
int b2=Integer.parseInt(ed2.getText().toString());
int c3=Integer.parseInt(ed3.getText().toString());
int d4=Integer.parseInt(ed4.getText().toString());
int e5=Integer.parseInt(ed5.getText().toString());
int f6=Integer.parseInt(ed6.getText().toString());
int g7=Integer.parseInt(ed7.getText().toString());
int total = a1 + b2 + c3 + d4 + e5 + f6;
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_expense_calculator);
ed1=(EditText) findViewById(R.id.editText1);
ed2=(EditText) findViewById(R.id.editText2);
ed3=(EditText) findViewById(R.id.editText3);
ed4=(EditText) findViewById(R.id.editText4);
ed5=(EditText) findViewById(R.id.editText5);
ed6=(EditText) findViewById(R.id.editText6);
ed7=(EditText) findViewById(R.id.editText7);
btn1=(Button) findViewById(R.id.button1);
btn2=(Button) findViewById(R.id.button2);
tt1=(TextView) findViewById(R.id.textView7);
tt2=(TextView) findViewById(R.id.TextView01);
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
tt1.setText(Integer.toString(total));
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//getting the input only when button clicked
a1=Integer.parseInt(ed1.getText().toString());
b2=Integer.parseInt(ed2.getText().toString());
c3=Integer.parseInt(ed3.getText().toString());
d4=Integer.parseInt(ed4.getText().toString());
e5=Integer.parseInt(ed5.getText().toString());
f6=Integer.parseInt(ed6.getText().toString());
g7=Integer.parseInt(ed7.getText().toString());
total = a1 + b2 + c3 + d4 + e5 + f6;
if(g7>total)
tt2.setText("Go for it !!");
else
tt2.setText("Out of budget :(");
}
});
}