android: ошибка при запуске приложения на эмуляторе затмения -"к сожалению, edvi(имя проекта) остановилось"
Я новичок в затмении, и я делаю небольшие проекты, чтобы открыть свою руку на Android. Каждый раз, когда я запускаю свой проект eclipse на эмуляторе, он отображает "к сожалению, edvi (имя проекта) остановилось"
Копия манифеста моего проекта:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.edvi"
android:versionCode="1"
android:versionName="1.0" android:installLocation="auto">
<uses-sdk
android:minSdkVersion="11"
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.edvi.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>
</application>
</manifest>
COPY OF MAINACTIVITY.JAVA ФАЙЛА МОЕГО ПРОЕКТА:
package com.example.edvi;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import android.os.Build;
import com.example.edvi.R;
public class MainActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText eText;
final Button btn;
eText = (EditText) findViewById(R.id.editText1);
btn = (Button) findViewById(R.id.button1);
btn.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
String str = eText.getText().toString();
Toast msg = Toast.makeText(getBaseContext(),str,
Toast.LENGTH_LONG);
msg.show();
msg.show();
}
});
}
@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;
}
}
Копия моего проекта LOGCAT:
05-26 01:57:34.831: D/AndroidRuntime(1166): Shutting down VM
05-26 01:57:34.831: W/dalvikvm(1166): threadid=1: thread exiting with uncaught exception (group=0xb2a8eba8)
05-26 01:57:34.871: E/AndroidRuntime(1166): FATAL EXCEPTION: main
05-26 01:57:34.871: E/AndroidRuntime(1166): Process: com.example.edvi, PID: 1166
05-26 01:57:34.871: E/AndroidRuntime(1166): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.edvi/com.example.edvi.MainActivity}: java.lang.NullPointerException
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.ActivityThread.access$800(ActivityThread.java:135)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.os.Handler.dispatchMessage(Handler.java:102)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.os.Looper.loop(Looper.java:136)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.ActivityThread.main(ActivityThread.java:5017)
05-26 01:57:34.871: E/AndroidRuntime(1166): at java.lang.reflect.Method.invokeNative(Native Method)
05-26 01:57:34.871: E/AndroidRuntime(1166): at java.lang.reflect.Method.invoke(Method.java:515)
05-26 01:57:34.871: E/AndroidRuntime(1166): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
05-26 01:57:34.871: E/AndroidRuntime(1166): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
05-26 01:57:34.871: E/AndroidRuntime(1166): at dalvik.system.NativeStart.main(Native Method)
05-26 01:57:34.871: E/AndroidRuntime(1166): Caused by: java.lang.NullPointerException
05-26 01:57:34.871: E/AndroidRuntime(1166): at com.example.edvi.MainActivity.onCreate(MainActivity.java:32)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.Activity.performCreate(Activity.java:5231)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
05-26 01:57:34.871: E/AndroidRuntime(1166): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
05-26 01:57:34.871: E/AndroidRuntime(1166): ... 11 more
05-26 01:58:12.301: D/AndroidRuntime(1206): Shutting down VM
05-26 01:58:12.301: W/dalvikvm(1206): threadid=1: thread exiting with uncaught exception (group=0xb2a8eba8)
05-26 01:58:12.331: E/AndroidRuntime(1206): FATAL EXCEPTION: main
05-26 01:58:12.331: E/AndroidRuntime(1206): Process: com.example.edvi, PID: 1206
05-26 01:58:12.331: E/AndroidRuntime(1206): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.edvi/com.example.edvi.MainActivity}: java.lang.NullPointerException
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.ActivityThread.access$800(ActivityThread.java:135)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.os.Handler.dispatchMessage(Handler.java:102)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.os.Looper.loop(Looper.java:136)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.ActivityThread.main(ActivityThread.java:5017)
05-26 01:58:12.331: E/AndroidRuntime(1206): at java.lang.reflect.Method.invokeNative(Native Method)
05-26 01:58:12.331: E/AndroidRuntime(1206): at java.lang.reflect.Method.invoke(Method.java:515)
05-26 01:58:12.331: E/AndroidRuntime(1206): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
05-26 01:58:12.331: E/AndroidRuntime(1206): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
05-26 01:58:12.331: E/AndroidRuntime(1206): at dalvik.system.NativeStart.main(Native Method)
05-26 01:58:12.331: E/AndroidRuntime(1206): Caused by: java.lang.NullPointerException
05-26 01:58:12.331: E/AndroidRuntime(1206): at com.example.edvi.MainActivity.onCreate(MainActivity.java:32)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.Activity.performCreate(Activity.java:5231)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
05-26 01:58:12.331: E/AndroidRuntime(1206): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
05-26 01:58:12.331: E/AndroidRuntime(1206): ... 11 more
05-26 01:58:16.341: I/Process(1206): Sending signal. PID: 1206 SIG: 9
05-26 01:58:42.821: D/AndroidRuntime(1245): Shutting down VM
05-26 01:58:42.821: W/dalvikvm(1245): threadid=1: thread exiting with uncaught exception (group=0xb2a8eba8)
05-26 01:58:42.851: E/AndroidRuntime(1245): FATAL EXCEPTION: main
05-26 01:58:42.851: E/AndroidRuntime(1245): Process: com.example.edvi, PID: 1245
05-26 01:58:42.851: E/AndroidRuntime(1245): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.edvi/com.example.edvi.MainActivity}: java.lang.NullPointerException
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.ActivityThread.access$800(ActivityThread.java:135)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.os.Handler.dispatchMessage(Handler.java:102)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.os.Looper.loop(Looper.java:136)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.ActivityThread.main(ActivityThread.java:5017)
05-26 01:58:42.851: E/AndroidRuntime(1245): at java.lang.reflect.Method.invokeNative(Native Method)
05-26 01:58:42.851: E/AndroidRuntime(1245): at java.lang.reflect.Method.invoke(Method.java:515)
05-26 01:58:42.851: E/AndroidRuntime(1245): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
05-26 01:58:42.851: E/AndroidRuntime(1245): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
05-26 01:58:42.851: E/AndroidRuntime(1245): at dalvik.system.NativeStart.main(Native Method)
05-26 01:58:42.851: E/AndroidRuntime(1245): Caused by: java.lang.NullPointerException
05-26 01:58:42.851: E/AndroidRuntime(1245): at com.example.edvi.MainActivity.onCreate(MainActivity.java:32)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.Activity.performCreate(Activity.java:5231)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
05-26 01:58:42.851: E/AndroidRuntime(1245): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
05-26 01:58:42.851: E/AndroidRuntime(1245): ... 11 more
05-26 01:58:47.891: I/Process(1245): Sending signal. PID: 1245 SIG: 9
Копия моего проекта FRAGMENT_MAIN.XML:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@style/AppTheme"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.edvi.MainActivity$PlaceholderFragment" >
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="42dp"
android:ems="10"
android:hint="@string/enter_something_fix" >
<requestFocus />
</EditText>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/editText1"
android:layout_marginTop="47dp"
android:text="@string/click_me_fix" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button1"
android:layout_marginTop="56dp"
android:text="@string/text_fix"
android:textSize="40sp" />
</RelativeLayout>
2 ответа
Попробуй это..
Изменить это..
setContentView(R.layout.activity_main);
в
setContentView(R.layout.fragment_main);
потому что все Button, TextView, EditText в fragment_main.xml, Так setContentView следует ссылаться на макет fragment_main.xml не activity_main.xml
Проблема в том, что все ваши UI находятся в FRAGMENT_MAIN.XML файл, пока вы используете
setContentView(R.layout.activity_main);
Поэтому каждый раз, когда вы получаете исключение нулевого указателя. Так что просто измените название вашего макета или поставьте все UI в activity_main.xml файл.