屏幕关闭时，应用停止运行

Question

I have created and android app which works in Landscape orientation mode. It keeps the screen on when it is active. However, when I lock the screen using the power button and the app is on, it stops working and gives the Resources$NotFoundException in LogCat , pointing to the onCreate() method of the Activity. Please help.

MenuActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    setContentView(R.layout.activity_menu); // Error points here
    bjmc.activity = this;
    preference = getSharedPreferences("BJLocalPlayer", Context.MODE_PRIVATE);
    if (!preference.contains("balance") || (preference.getLong("balance", 0)) < 100) {
        Editor edit = preference.edit();
        edit.putLong("balance", 1000);
        edit.commit();
    }
    ((TextView) findViewById(R.id.player_balance)).setText(Long
            .toString(preference.getLong("balance", 0)));

    tvAmerican = new TextView(this);
    tvAmerican.setGravity(Gravity.CENTER);
    tvAmerican.setBackgroundColor(0x40000000);
    tvAmerican.setTextColor(getResources().getColor(R.color.orangish_yellow));
    tvAmerican.setText("American");
    tvEuropean = new TextView(this);
    tvEuropean.setGravity(Gravity.CENTER);
    tvEuropean.setText("European");

    final TabHost th = (TabHost) findViewById(R.id.table_tab_host);
    th.setup();
    th.addTab(th.newTabSpec("American").setIndicator(tvAmerican)
            .setContent(R.id.american));
    th.addTab(th.newTabSpec("European").setIndicator(tvEuropean)
            .setContent(R.id.european));
    th.setOnTabChangedListener(new OnTabChangeListener() {

        @Override
        public void onTabChanged(String tabId) {
            // TODO Auto-generated method stub
            switch (tabId) {
            case "American":
                tvAmerican.setBackgroundColor(0x40000000);
                tvAmerican.setTextColor(getResources().getColor(R.color.orangish_yellow));
                tvEuropean.setBackgroundColor(0x00000000);
                tvEuropean.setTextColor(getResources().getColor(R.color.total_text_color));
                break;
            case "European":
                tvAmerican.setBackgroundColor(0x00000000);
                tvAmerican.setTextColor(getResources().getColor(R.color.total_text_color));
                tvEuropean.setBackgroundColor(0x40000000);
                tvEuropean.setTextColor(getResources().getColor(R.color.orangish_yellow));
                break;
            }
        }
    });
    final ViewPager american = (ViewPager) findViewById(R.id.american);
    american.setAdapter(new ImagePagerAdapter(getLayoutInflater(),
            new int[] { R.drawable.am_table0, R.drawable.am_table1,
                    R.drawable.am_table2, R.drawable.am_table3,
                    R.drawable.am_table4 }));
    final ViewPager european = (ViewPager) findViewById(R.id.european);
    european.setAdapter(new ImagePagerAdapter(getLayoutInflater(),
            new int[] { R.drawable.eu_table0, R.drawable.eu_table1,
                    R.drawable.eu_table2, R.drawable.eu_table3,
                    R.drawable.eu_table4 }));

    ((Button) findViewById(R.id.button_play_single_player)).setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    tableIndex = (th.getCurrentTab() == 0 ? american.getCurrentItem()
                            : european.getCurrentItem() + 5);
                    bjmc.startGameForTableIndex(tableIndex,
                        BJMatchCoordinator.SINGLEPLAYER, new BJMCDelegate(MenuActivity.this));
                }
            });

    ((Button) findViewById(R.id.button_play_bluetooth)).setOnClickListener(new BluetoothListener());
}

UPDATE

LogCat

07-14 11:50:18.129: W/ResourceType(4091): Failure getting entry for 0x7f030018 (t=2 e=24) in package 0 (error -75)
07-14 11:50:18.179: W/dalvikvm(4091): threadid=1: thread exiting with uncaught exception (group=0x40af39f0)
07-14 11:50:18.219: E/AndroidRuntime(4091): FATAL EXCEPTION: main
07-14 11:50:18.219: E/AndroidRuntime(4091): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.iapp.bjp/com.iapp.bjp.MenuActivity}: android.content.res.Resources$NotFoundException: Resource ID #0x7f030018
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:3351)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread.access$700(ActivityThread.java:123)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1151)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.os.Looper.loop(Looper.java:137)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread.main(ActivityThread.java:4424)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at java.lang.reflect.Method.invokeNative(Native Method)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at java.lang.reflect.Method.invoke(Method.java:511)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:817)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at dalvik.system.NativeStart.main(Native Method)
07-14 11:50:18.219: E/AndroidRuntime(4091): Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f030018
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.content.res.Resources.getValue(Resources.java:1022)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.content.res.Resources.loadXmlResourceParser(Resources.java:2109)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.content.res.Resources.getLayout(Resources.java:861)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:268)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.Activity.setContentView(Activity.java:1837)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at com.iapp.bjp.MenuActivity.onCreate(MenuActivity.java:55)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.Activity.performCreate(Activity.java:4470)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
07-14 11:50:18.219: E/AndroidRuntime(4091):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
07-14 11:50:18.219: E/AndroidRuntime(4091):     ... 12 more

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.iapp.bjp"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="19" />

    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" >
        <activity
            android:name="com.iapp.bjp.MenuActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="@string/app_name"
            android:screenOrientation="sensorLandscape" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.iapp.bjp.SinglePlayerAddBetActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="@string/title_activity_single_player_add_bet"
            android:parentActivityName="com.iapp.bjp.MenuActivity"
            android:screenOrientation="sensorLandscape" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.iapp.bjp.MenuActivity" />
        </activity>
        <activity
            android:name="com.iapp.bjp.SinglePlayerGameActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="@string/title_activity_single_player_game"
            android:screenOrientation="sensorLandscape" >
        </activity>
        <activity
            android:name="com.iapp.bjp.bluetooth.ScanDeviceActivity"
            android:configChanges="orientation|keyboardHidden"
            android:label="@string/title_activity_scan_device" >
        </activity>
    </application>

</manifest>

UPDATE 2

activity_menu.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/menu_background"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/bg_menu"
    android:gravity="center"
    android:keepScreenOn="true"
    android:orientation="horizontal"
    android:baselineAligned="false"
    tools:context="com.iapp.bjp.MenuActivity" >

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/player_balance_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/player_balance_text"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <TextView
            android:id="@+id/player_balance"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceLarge" />

    </LinearLayout>

    <TabHost
        android:id="@+id/table_tab_host"
        android:layout_width="0dip"
        android:layout_height="200dp"
        android:layout_gravity="center"
        android:layout_weight="2" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:orientation="vertical" >

            <TabWidget
                android:id="@android:id/tabs"
                style="@android:style/Widget.Holo.TextView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >
            </TabWidget>

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" >

                <android.support.v4.view.ViewPager
                    android:id="@+id/american"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" >
                </android.support.v4.view.ViewPager>

                <android.support.v4.view.ViewPager
                    android:id="@+id/european"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" >
                </android.support.v4.view.ViewPager>
            </FrameLayout>
        </LinearLayout>
    </TabHost>

    <LinearLayout
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:gravity="center"
        android:orientation="vertical" >

        <Button
            android:id="@+id/button_play_single_player"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/home_btn_ph"
            android:text="@string/single_play_button_text" />

        <Button
            android:id="@+id/button_play_bluetooth"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/home_btn_ph"
            android:text="@string/bluetooth_button_text" />
    </LinearLayout>

</LinearLayout>

Note: Please keep in mind that the app works fine on normal usage. The problem occurs when I turn the screen off using the power button.

Answer 1

从清单中删除“ android：screenOrientation =“ sensorLandscape”“，然后发布您的activity_menu.xml

Answer 2

The problem was that I had kept the layout xml files in the layout-land folder instead of the layout folder. When I locked the screen, it turned to portrait mode internally (don't know why it always stays in that orientation though) and as it could not find resources for portrait mode, it gave the Resources$NotFoundException