如果我在我的xml中使用
android:textSize =“?android:attr / textAppearanceLarge”,我的应用程序崩溃了.我不想给出硬编码文本大小,因为我必须为不同的屏幕尺寸创建create xml,或者我必须在运行时管理文本大小.
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <EditText android:id="@+id/title" android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="@string/title" android:textSize="?android:attr/textAppearanceLarge" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/saveOnDialog" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="0.5" android:text="@string/save" style="?android:attr/buttonbarButtonStyle" android:textSize="?android:attr/textAppearanceLarge" /> <Button android:id="@+id/cancelOnDialog" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="0.5" android:text="@string/cancel" style="?android:attr/buttonbarButtonStyle" android:textSize="?android:attr/textAppearanceLarge" /> </LinearLayout> </LinearLayout>
这是Log.e输出 –
06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.createView(LayoutInflater.java:620) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.rInflate(LayoutInflater.java:755) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.inflate(LayoutInflater.java:397) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.inflate(LayoutInflater.java:353) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:271) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.app.Dialog.setContentView(Dialog.java:479) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.umob.alerts.SaveDialog.showSaveDialog(SaveDialog.java:19) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.umob.notepad.NotepadScreen.onoptionsItemSelected(NotepadScreen.java:41) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.app.Activity.onMenuItemSelected(Activity.java:2566) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:990) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:156) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.widget.AdapterView.performItemClick(AdapterView.java:298) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.widget.AbsListView.performItemClick(AbsListView.java:1100) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2788) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.widget.AbsListView$1.run(AbsListView.java:3463) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.os.Handler.handleCallback(Handler.java:730) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.os.Handler.dispatchMessage(Handler.java:92) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.os.Looper.loop(Looper.java:137) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.app.ActivityThread.main(ActivityThread.java:5214) 06-26 11:46:27.439: E/AndroidRuntime(1731): at java.lang.reflect.Method.invokeNative(Native Method) 06-26 11:46:27.439: E/AndroidRuntime(1731): at java.lang.reflect.Method.invoke(Method.java:525) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739) 06-26 11:46:27.439: E/AndroidRuntime(1731): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:555) 06-26 11:46:27.439: E/AndroidRuntime(1731): at dalvik.system.NativeStart.main(Native Method) 06-26 11:46:27.439: E/AndroidRuntime(1731): Caused by: java.lang.reflect.InvocationTargetException 06-26 11:46:27.439: E/AndroidRuntime(1731): at java.lang.reflect.Constructor.constructNative(Native Method) 06-26 11:46:27.439: E/AndroidRuntime(1731): at java.lang.reflect.Constructor.newInstance(Constructor.java:417) 06-26 11:46:27.439: E/AndroidRuntime(1731): at android.view.LayoutInflater.createView(LayoutInflater.java:594)