android应用程序将无法启动

Question

Im trying to debug my menu activity but it cant seem to display the output. The error msg on the screen says Savings Guider(my app name) has stopped working. If I click my app manually from the android menu, it says my app is not installed. However there are no errors in my codes. Anyone can help me?

My Menu Activity codes:

public class SavingsGuiderMenuActivity extends SavingsActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.menu);
    ListView menuList = (ListView) findViewById(R.id.ListView_Menu);
    String[] items = { getResources().getString(R.string.start),
            getResources().getString(R.string.about),
            getResources().getString(R.string.help) };
    ArrayAdapter<String> adapt = new ArrayAdapter<String>(this, R.layout.menu_item, items);
    menuList.setAdapter(adapt);
    menuList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View itemClicked, int position, long id) {
            // Note: if the list was built "by hand" the id could be used.
            // As-is, though, each item has the same id
            TextView textView = (TextView) itemClicked;
            String strText = textView.getText().toString();
            if (strText.equalsIgnoreCase(getResources().getString(R.string.start))) {
                // Launch the app Activity
                startActivity(new Intent(SavingsGuiderMenuActivity.this, SavingsGuiderAppActivity.class));
            } else if (strText.equalsIgnoreCase(getResources().getString(R.string.help))) {
                // Launch the Help Activity
                startActivity(new Intent(SavingsGuiderMenuActivity.this, SavingsGuiderHelpActivity.class));
            } else if (strText.equalsIgnoreCase(getResources().getString(R.string.about))) {
                // Launch the about Activity
                startActivity(new Intent(SavingsGuiderMenuActivity.this, SavingsGuiderAboutActivity.class));
            } 
        }
    });
}

}

My manifest:

  <application
    android:label="@string/splash"
    android:debuggable="true"
    android:icon="@drawable/saving">
    <activity
        android:name=".SavingsGuiderMenuActivity"
        android:label="@string/splash">
        <intent-filter>
            <action
                android:name="android.intent.action.MAIN" />
            <category
                android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

Logcat errors

07-22 03:18:24.712: E/ArrayAdapter(806): You must supply a resource ID for a TextView
07-22 03:18:24.772: E/AndroidRuntime(806): FATAL EXCEPTION: main
07-22 03:18:24.772: E/AndroidRuntime(806): java.lang.IllegalStateException: ArrayAdapter requires the resource ID to be a TextView
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:386)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.AbsListView.obtainView(AbsListView.java:2033)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.ListView.measureHeightOfChildren(ListView.java:1244)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.ListView.onMeasure(ListView.java:1155)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.View.measure(View.java:12581)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.RelativeLayout.measureChild(RelativeLayout.java:579)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:392)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.View.measure(View.java:12581)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4671)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:660)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.View.measure(View.java:12581)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4671)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.View.measure(View.java:12581)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:812)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.View.measure(View.java:12581)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4671)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
07-22 03:18:24.772: E/AndroidRuntime(806):  at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2062)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.View.measure(View.java:12581)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1038)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2382)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.os.Looper.loop(Looper.java:137)
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.app.ActivityThread.main(ActivityThread.java:4340)
07-22 03:18:24.772: E/AndroidRuntime(806):  at java.lang.reflect.Method.invokeNative(Native Method)
07-22 03:18:24.772: E/AndroidRuntime(806):  at java.lang.reflect.Method.invoke(Method.java:511)
07-22 03:18:24.772: E/AndroidRuntime(806):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-22 03:18:24.772: E/AndroidRuntime(806):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-22 03:18:24.772: E/AndroidRuntime(806):  at dalvik.system.NativeStart.main(Native Method)
07-22 03:18:24.772: E/AndroidRuntime(806): Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.TextView
07-22 03:18:24.772: E/AndroidRuntime(806):  at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:379)
07-22 03:18:24.772: E/AndroidRuntime(806):  ... 33 more

Answer 1

You further used three of your classes in your code namely SavingsGuiderAppActivity.java, SavingsGuiderHelpActivity.java and SavingsGuiderAboutActivity.java. You need to register them in the manifest as well. Your manifest should look like this:

<application
android:label="@string/splash"
android:debuggable="true"
android:icon="@drawable/saving">
<activity
    android:name=".SavingsGuiderMenuActivity"
    android:label="@string/splash">
    <intent-filter>
        <action
            android:name="android.intent.action.MAIN" />
        <category
            android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity
    android:name=".SavingsGuiderAppActivity"
    android:label="@string/splash">
<intent-filter>
        <action
            android:name="ACTIVITY_A" />
        <category
            android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>
<activity
    android:name=".SavingsGuiderHelpActivity"
    android:label="@string/splash">
<intent-filter>
        <action
            android:name="ACTIVITY_B" />
        <category
            android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>
<activity
    android:name=".SavingsGuiderAboutActivity"
    android:label="@string/splash">
<intent-filter>
        <action
            android:name="ACTIVITY_C" />
        <category
            android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>

Answer 2

No your xml is fine I think. If you're trying to create a menu to choose between activities, this is probably not the best way.

String classes[] = {"class_a","class_b","class_c"};
String class = classes[position]; Class ourClass=Class.forName("package_name"+class);
Intent intent = new Intent(Menu.this,ourClass);
startActivity(intent);

Try this in your onItemClicked() in try brackets.