在Init View期间我的应用程序的未知粉碎

Question

我必须在Android中测试文件IO，发生未知错误。

如果我禁用InitView和SetOnClickListener函数，它的工作正常

我想知道为什么以及它如何粉碎。然后解决它。

这是代码。

// Last update: 2014/06/02
// Author: David Wu ( Wu,Chen-Hao zh-TW )
// Create date: 2014/06/01
//

// This java file is main program for Android file IO test
// in Android Tablet Nexus 7 ( ver. 2013 )
//
package org.top_wu.fileiotest;

// Java resource package
//
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileNotFoundException;

// Android resource package
//
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

// Main activity for test program
//
public class Main extends Activity {

    //private Context mContext = getApplicationContext();

    private Button   butnSave;
    private Button   butnOpen;
    private EditText etFilename;
    private EditText etContext;

    private String filename;
    private String context;

    private FileOutputStream outputFile;
    private FileInputStream  inputFile;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        InitVIew();
        /*SetOnClickListener();*/

    } // END OF onCreate method in Main class

    @Override
    protected void onDestroy() {

        super.onDestroy();

    } // END OF onDestory method in Main class

    private void InitVIew() {

        butnSave   = (Button) findViewById(R.id.butnSave);
        butnOpen   = (Button) findViewById(R.id.butnOpen);
        etFilename = (EditText) findViewById(R.id.etFilename);
        etContext  = (EditText) findViewById(R.id.etContext);

    } // END OF InitVIew in Main class

    private void SetOnClickListener() {

        butnSave.setOnClickListener(saveFile);

    } // END OF SetOnClickListenermethod in Main class 

    private Button.OnClickListener saveFile = new Button.OnClickListener() {

        @Override
        public void onClick(View v) {

            filename = etFilename.getText().toString();

            try {

                outputFile = openFileOutput(filename, Context.MODE_PRIVATE);

            } // END OF try open output file

            catch (FileNotFoundException e) {

                e.printStackTrace();

                Toast.makeText(
                    getApplicationContext(),
                    "ERROR: Open file failure",
                    Toast.LENGTH_SHORT
                ).show();

            } // END OF catch the open output file error

        } // END OF onClick method on button on click listener

    }; // END OF saveFile button on click listener 

} // END OF Main class

主要布局

<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"
    tools:context="${packageName}.${activityClass}" >

    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/fileName_label"
            android:textSize="24sp" />

        <EditText
            android:id="@+id/etFilename"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10"
            android:inputType="text"
            android:textSize="24sp" >

            <requestFocus />
        </EditText>

        <Button
            android:id="@+id/butnOpen"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/open_label" />

    </LinearLayout>

    <RelativeLayout
        android:id="@+id/fileContextLayout"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/funcButnLayout"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/linearLayout1" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentLeft="true"
            android:layout_alignParentTop="true"
            android:text="@string/context_label"
            android:textSize="24sp" />

        <EditText
            android:id="@+id/etContext"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/textView1"
            android:ems="10"
            android:inputType="textMultiLine"
            android:scrollbars="vertical" />

    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/funcButnLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true" >

        <Button
            android:id="@+id/butnSave"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_centerHorizontal="true"
            android:gravity="center"
            android:text="@string/save_label"
            android:textSize="24sp" />
    </RelativeLayout>

</RelativeLayout>

此问题的堆栈跟踪如下：

eclipse.buildId=v22.6.2-1085508
java.version=1.7.0_45
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=zh_TW
Framework arguments:  -product com.android.ide.eclipse.adt.package.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product com.android.ide.eclipse.adt.package.product

Error
Mon Jun 02 16:29:51 CST 2014
Unhandled event loop exception
java.lang.IllegalArgumentException: Argument not valid
    at org.eclipse.swt.SWT.error(SWT.java:4378)
    at org.eclipse.swt.SWT.error(SWT.java:4312)
    at org.eclipse.swt.SWT.error(SWT.java:4283)
    at org.eclipse.swt.widgets.Widget.error(Widget.java:472)
    at org.eclipse.swt.widgets.Control.setMenu(Control.java:3477)
    at com.android.ddmuilib.logcat.LogCatPanel$20.handleEvent(LogCatPanel.java:1042)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1057)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1081)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
    at org.eclipse.swt.widgets.Widget.showMenu(Widget.java:1476)
    at org.eclipse.swt.widgets.Widget.wmContextMenu(Widget.java:1578)
    at org.eclipse.swt.widgets.Control.WM_CONTEXTMENU(Control.java:4756)
    at org.eclipse.swt.widgets.Table.WM_CONTEXTMENU(Table.java:5978)
    at org.eclipse.swt.widgets.Control.windowProc(Control.java:4615)
    at org.eclipse.swt.widgets.Table.windowProc(Table.java:5919)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4990)
    at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
    at org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2443)
    at org.eclipse.swt.widgets.Table.callWindowProc(Table.java:564)
    at org.eclipse.swt.widgets.Table.callWindowProc(Table.java:430)
    at org.eclipse.swt.widgets.Widget.wmRButtonUp(Widget.java:2399)
    at org.eclipse.swt.widgets.Control.WM_RBUTTONUP(Control.java:5217)
    at org.eclipse.swt.widgets.Control.windowProc(Control.java:4679)
    at org.eclipse.swt.widgets.Table.windowProc(Table.java:5919)
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4990)
    at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
    at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2549)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3757)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1113)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:997)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:138)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:610)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:567)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1450)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1426)