不幸的是,你的App已经停止了 [英] Unfortunately yourApp has Stopped
本文介绍了不幸的是,你的App已经停止了的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Main
package com.example.test1;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends 活动{
@覆盖
public void onCreate(Bundle savedInstanceState)
{
super .onCreate( savedInstanceState);
setContentView(R.layout.activity_main);
final 按钮changeActivityButton =(Button)findViewById(R.id.button1);
changeActivityButton.setOnClickListener(
new View.OnClickListener()
{
public void onClick(查看v)
{
Intent intent = new Intent(MainActivity。 this ,Second。 class );
startActivity(intent);
}
}
);
}
}
片段
< relativelayout xmlns:android = < span class =code-string> http://schemas.android.com/apk/res/android>
xmlns:tools = http://schemas.android.com/tools
android:layout_width = match_parent
android:layout_height = match_parent
android:paddingBottom = @ dimen / activity_vertical_margin
android:paddingLeft = @ dimen / activity_horizontal_margin
android:paddingRight = @ dimen / activity_horizontal_margin
android:paddingTop = @ dimen / activity_vertical_margin
工具:context = com.example.test1.MainActivity $ PlaceholderFragment >
< textview>
android:id = @ + id / textView1
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_alignParentLeft = true
android:layout_alignParentTop = true
android:layout_marginTop = 15dp
android:text = 名称:
android:textAppearance = ?android:attr / textAppearanceMedium />
< textview>
android:id = @ + id / textView2
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_alignLeft = @ + id / textView1
android:layout_below = @ + id / textView1
android:layout_marginTop = 23dp
android:text = 移动:
android:textAppearance = ?android:attr / textAppearanceMedium />
< edittext>
android:id = @ + id / editText1
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_above = @ + id / textView2
android:layout_alignLeft = @ + id / button1
android:layout_alignParentRight = true
android:ems = 10
android:inputType = textPersonName />
< Button
android:id = @ + id / button1
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_below = @ + id / editText2
android:layout_centerHorizontal = true
android:layout_marginTop = 124dp
android:text = 按钮 />
< edittext>
android:id = @ + id / editText2
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_alignLeft = @ + id / editText1
android:layout_alignRight = @ + id / editText1
android:layout_alignTop = @ + id / textView2
android:ems = 10
android:inputType = phone>
< requestfocus />
< / edittext>
< / edittext>< / textview>< / textview>< / relativelayout>
清单
< manifest xmlns:android = http ://schemas.android.com/apk/res/android跨度>>
package = com.example.test1
android:versionCode = < span class =code-string> 1
android:versionName = 1.0>
< uses-sdk>
android:minSdkVersion = 18
android:targetSdkVersion = 19 />
< application>
android:allowBackup = true
android:icon = @ drawable / ic_launcher
android:label = @ string / app_name
android:theme = @ style / AppTheme>
< activity>
android:name = com.example.test1.MainActivity
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 = com.example.test1.Second
android :label = @ string / title_activity_second>
< / activity>
< / application>
LogCat
04-29 16:30:07.188:W / ApplicationPackageManager(19765):getCSCPackageItemText()
04-29 16:30:07.239:D / AndroidRuntime (19765):关闭VM
04-29 16:30:07.239:W / dalvikvm(19765):threadid = 1:线程退出未捕获异常(组= 0x41843da0)
04-29 16: 30:07.239:E / AndroidRuntime(19765):致命异常:主
04-29 16:30:07.239:E / AndroidRuntime(19765):处理:com.example.test1,PID:19765
04-29 16:30:07.239:E / AndroidRuntime(19765):java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.test1 / com.example.test1.MainActivity}:java.lang.NullPointerException
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305)
04-29 16:30:07.239:E / AndroidRuntime( 19765):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.ActivityThread.access $ 900(ActivityThread.java:161)
04-29 16:30:07.239:E / AndroidRuntime( 19765):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1265)
04-29 16:30:07.239:E / AndroidRuntime(19765):at android.os.Handler.dispatchMessage(Handler .java:102)
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.os.Looper.loop(Looper.java:157)
04-29 16:30 :07.239:E / AndroidRuntime(19765):在android.app.ActivityThread.main(ActivityThread.java:5356)
04-29 16:30:07.239:E / AndroidRuntime(19765):at java.lang。 reflect.Method.invokeNative(Native Method)
04-29 16:30:07.239:E / AndroidRuntime(19765):at java.lang.reflect.Method.invoke(Method.java:515)
04-29 16:30:07.239:E / AndroidRuntime(19765):at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1265)
04-29 16:30:07.239: E / AndroidRuntime(19765):at com.android.internal.os.ZygoteInit.main(ZygoteInit。 java:1081)
04-29 16:30:07.239:E / AndroidRuntime(19765):at dalvik.system.NativeStart.main(Native Method)
04-29 16:30:07.239:E / AndroidRuntime(19765):引起:java.lang.NullPointerException
04-29 16:30:07.239:E / AndroidRuntime(19765):at com.example.test1.MainActivity.onCreate(MainActivity.java:20 )
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.Activity.performCreate(Activity.java:5426)
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
04-29 16:30:07.239:E / AndroidRuntime(19765):at android.app.ActivityThread.performLaunchActivity( ActivityThread.java:2269)
04-29 16:30:07.239:E / AndroidRuntime(19765):... 11 more
解决方案
PlaceholderFragment>
< textview>
android:id = @ + id / textView1
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_alignParentLeft = true
android:layout_alignParentTop = true
android:layout_marginTop = 15dp
android:text = 名称:
android:textAppearance = ?android:attr / textAppearanceMedium />
< textview>
android:id = @ + id / textView2
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_alignLeft = @ + id / textView1
android:layout_below = @ + id / textView1
android:layout_marginTop = 23dp
android:text = 移动:
android:textAppearance = ?android:attr / textAppearanceMedium />
< edittext>
android:id = @ + id / editText1
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_above = @ + id / textView2
android:layout_alignLeft = @ + id / button1
android:layout_alignParentRight = true
android:ems = 10
android:inputType = textPersonName />
< Button
android:id = @ + id / button1
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_below = @ + id / editText2
android:layout_centerHorizontal = true
android:layout_marginTop = 124dp
android:text = 按钮 />
< edittext>
android:id = @ + id / editText2
android:layout_width = wrap_content
android:layout_height = wrap_content
android:layout_alignLeft = @ + id / editText1
android:layout_alignRight = @ + id / editText1
android:layout_alignTop = @ + id / textView2
android:ems = 10
android:inputType = phone>
< requestfocus />
< / edittext>
< / edittext>< / textview>< / textview>< / relativelayout>
清单
< manifest xmlns:android = http ://schemas.android.com/apk/res/android跨度>>
package = com.example.test1
android:versionCode = < span class =code-string> 1
android:versionName = 1.0>
< uses-sdk>
android:minSdkVersion = 18
android:targetSdkVersion = 19 />
< application>
android:allowBackup = true
android:icon = @ drawable / ic_launcher
android:label = @ string / app_name
android:theme = @ style / AppTheme>
< activity>
android:name = com.example.test1.MainActivity
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 = com.example.test1.Second
android :label = @ string / title_activity_second>
< / activity>
< / application>
LogCat
04-29 16:30:07.188:W / ApplicationPackageManager(19765):getCSCPackageItemText()
04-29 16:30:07.239:D / AndroidRuntime (19765):关闭VM
04-29 16:30:07.239:W / dalvikvm(19765):threadid = 1:线程退出未捕获异常(组= 0x41843da0)
04-29 16: 30:07.239:E / AndroidRuntime(19765):致命异常:主
04-29 16:30:07.239:E / AndroidRuntime(19765):处理:com.example.test1,PID:19765
04-29 16:30:07.239:E / AndroidRuntime(19765):java.lang.RuntimeException:无法启动活动ComponentInfo {com.example.test1 / com.example.test1.MainActivity}:java.lang.NullPointerException
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305)
04-29 16:30:07.239:E / AndroidRuntime( 19765):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.ActivityThread.access
900(ActivityThread.java:161)
04- 29 16:30:07.239:E / AndroidRuntime(19765):在android.app.ActivityThread
H.handleMessage(ActivityThread.java:1265)
04-29 16: 30:07.239:E / AndroidRuntime(19765):在android.os.Handler.dispatchMessage(Handler.java:102)
04-29 16:30:07.239:E / AndroidRuntime(19765):at android.os .Looper.loop(Looper.java:157)
04-29 16:30:07.239:E / AndroidRuntime(19765):在android.app.ActivityThread.main(ActivityThread.java:5356)
04-29 16:30:07.239:E / AndroidRuntime(19765):at java.lang.reflect.Method.invokeNative(Native Method)
04-29 16:30:07.239:E / AndroidRuntime(19765): at java.lang.reflect.Method.invoke(Method.java:515)
04-29 16:30:07.239:E / AndroidRuntime(19765):at com.android.internal.os.ZygoteInit
Main
package com.example.test1;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button changeActivityButton = (Button)findViewById(R.id.button1);
changeActivityButton.setOnClickListener(
new View.OnClickListener()
{
public void onClick(View v)
{
Intent intent = new Intent(MainActivity.this, Second.class);
startActivity(intent);
}
}
);
}
}
Fragment
<relativelayout xmlns:android="http://schemas.android.com/apk/res/android">
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.test1.MainActivity$PlaceholderFragment" >
<textview>
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="15dp"
android:text="Name: "
android:textAppearance="?android:attr/textAppearanceMedium" />
<textview>
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_below="@+id/textView1"
android:layout_marginTop="23dp"
android:text="Mobile: "
android:textAppearance="?android:attr/textAppearanceMedium" />
<edittext>
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView2"
android:layout_alignLeft="@+id/button1"
android:layout_alignParentRight="true"
android:ems="10"
android:inputType="textPersonName" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editText2"
android:layout_centerHorizontal="true"
android:layout_marginTop="124dp"
android:text="Button" />
<edittext>
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/editText1"
android:layout_alignRight="@+id/editText1"
android:layout_alignTop="@+id/textView2"
android:ems="10"
android:inputType="phone" >
<requestfocus />
</edittext>
</edittext></textview></textview></relativelayout>
Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
package="com.example.test1"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk>
android:minSdkVersion="18"
android:targetSdkVersion="19" />
<application>
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity>
android:name="com.example.test1.MainActivity"
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="com.example.test1.Second"
android:label="@string/title_activity_second" >
</activity>
</application>
LogCat
04-29 16:30:07.188: W/ApplicationPackageManager(19765): getCSCPackageItemText()
04-29 16:30:07.239: D/AndroidRuntime(19765): Shutting down VM
04-29 16:30:07.239: W/dalvikvm(19765): threadid=1: thread exiting with uncaught exception (group=0x41843da0)
04-29 16:30:07.239: E/AndroidRuntime(19765): FATAL EXCEPTION: main
04-29 16:30:07.239: E/AndroidRuntime(19765): Process: com.example.test1, PID: 19765
04-29 16:30:07.239: E/AndroidRuntime(19765): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test1/com.example.test1.MainActivity}: java.lang.NullPointerException
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.access$900(ActivityThread.java:161)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.os.Handler.dispatchMessage(Handler.java:102)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.os.Looper.loop(Looper.java:157)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.main(ActivityThread.java:5356)
04-29 16:30:07.239: E/AndroidRuntime(19765): at java.lang.reflect.Method.invokeNative(Native Method)
04-29 16:30:07.239: E/AndroidRuntime(19765): at java.lang.reflect.Method.invoke(Method.java:515)
04-29 16:30:07.239: E/AndroidRuntime(19765): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
04-29 16:30:07.239: E/AndroidRuntime(19765): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
04-29 16:30:07.239: E/AndroidRuntime(19765): at dalvik.system.NativeStart.main(Native Method)
04-29 16:30:07.239: E/AndroidRuntime(19765): Caused by: java.lang.NullPointerException
04-29 16:30:07.239: E/AndroidRuntime(19765): at com.example.test1.MainActivity.onCreate(MainActivity.java:20)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.Activity.performCreate(Activity.java:5426)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
04-29 16:30:07.239: E/AndroidRuntime(19765): ... 11 more
解决方案
PlaceholderFragment" > <textview> android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_marginTop="15dp" android:text="Name: " android:textAppearance="?android:attr/textAppearanceMedium" /> <textview> android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/textView1" android:layout_below="@+id/textView1" android:layout_marginTop="23dp" android:text="Mobile: " android:textAppearance="?android:attr/textAppearanceMedium" /> <edittext> android:id="@+id/editText1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_above="@+id/textView2" android:layout_alignLeft="@+id/button1" android:layout_alignParentRight="true" android:ems="10" android:inputType="textPersonName" /> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/editText2" android:layout_centerHorizontal="true" android:layout_marginTop="124dp" android:text="Button" /> <edittext> android:id="@+id/editText2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/editText1" android:layout_alignRight="@+id/editText1" android:layout_alignTop="@+id/textView2" android:ems="10" android:inputType="phone" > <requestfocus /> </edittext> </edittext></textview></textview></relativelayout> Manifest <manifest xmlns:android="http://schemas.android.com/apk/res/android"> package="com.example.test1" android:versionCode="1" android:versionName="1.0" > <uses-sdk> android:minSdkVersion="18" android:targetSdkVersion="19" /> <application> android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity> android:name="com.example.test1.MainActivity" 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="com.example.test1.Second" android:label="@string/title_activity_second" > </activity> </application>
LogCat
04-29 16:30:07.188: W/ApplicationPackageManager(19765): getCSCPackageItemText() 04-29 16:30:07.239: D/AndroidRuntime(19765): Shutting down VM 04-29 16:30:07.239: W/dalvikvm(19765): threadid=1: thread exiting with uncaught exception (group=0x41843da0) 04-29 16:30:07.239: E/AndroidRuntime(19765): FATAL EXCEPTION: main 04-29 16:30:07.239: E/AndroidRuntime(19765): Process: com.example.test1, PID: 19765 04-29 16:30:07.239: E/AndroidRuntime(19765): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test1/com.example.test1.MainActivity}: java.lang.NullPointerException 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2305) 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363) 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.access
900(ActivityThread.java:161) 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread
H.handleMessage(ActivityThread.java:1265) 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.os.Handler.dispatchMessage(Handler.java:102) 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.os.Looper.loop(Looper.java:157) 04-29 16:30:07.239: E/AndroidRuntime(19765): at android.app.ActivityThread.main(ActivityThread.java:5356) 04-29 16:30:07.239: E/AndroidRuntime(19765): at java.lang.reflect.Method.invokeNative(Native Method) 04-29 16:30:07.239: E/AndroidRuntime(19765): at java.lang.reflect.Method.invoke(Method.java:515) 04-29 16:30:07.239: E/AndroidRuntime(19765): at com.android.internal.os.ZygoteInit
这篇关于不幸的是,你的App已经停止了的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文