这是我的问题:
我正在尝试显示一个 AlertDialog,但似乎无法实现。
这是我的代码:
tv.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View arg0)
{
final EditText input = new EditText(c);
AlertDialog.Builder adb = new AlertDialog.Builder(c);
adb.setTitle(lb)
.setMessage("Test")
.setView(input)
.setPositiveButton("Ok", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
//tv.setText(input.getEditableText().toString());
Toast.makeText(c, input.getEditableText().toString(), Toast.LENGTH_LONG).show();
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int whichButton)
{
dialog.cancel();
}
}).show();
}
});
当用户点击标签时,我想展示这个AlertDialog,然后在用户按下“确定”按钮时,使用编辑文本的值来更改标签值。
但是,在尝试点击时展示对话框时,它会崩溃。
07-18 16:04:59.240: E/AndroidRuntime(10503): FATAL EXCEPTION: main
07-18 16:04:59.240: E/AndroidRuntime(10503): android.view.WindowManager$BadTokenException: Unable to add window --
token null is not for an application
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.view.ViewRootImpl.setView(ViewRootImpl.java:710)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:345)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:224)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.view.WindowManagerImpl$CompatModeWrapper.addView(WindowManagerImpl.java:149)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.app.Dialog.show(Dialog.java:277)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.app.AlertDialog$Builder.show(AlertDialog.java:932)
07-18 16:04:59.240: E/AndroidRuntime(10503): at com.technicachat.webdatadomo.Consignes$2$1.run(Consignes.java:114)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.app.Activity.runOnUiThread(Activity.java:4784)
07-18 16:04:59.240: E/AndroidRuntime(10503): at com.technicachat.webdatadomo.Consignes$2.onClick(Consignes.java:90)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.view.View.performClick(View.java:4211)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.view.View$PerformClick.run(View.java:17267)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.os.Handler.handleCallback(Handler.java:615)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.os.Handler.dispatchMessage(Handler.java:92)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.os.Looper.loop(Looper.java:137)
07-18 16:04:59.240: E/AndroidRuntime(10503): at android.app.ActivityThread.main(ActivityThread.java:4898)
07-18 16:04:59.240: E/AndroidRuntime(10503): at java.lang.reflect.Method.invokeNative(Native Method)
07-18 16:04:59.240: E/AndroidRuntime(10503): at java.lang.reflect.Method.invoke(Method.java:511)
07-18 16:04:59.240: E/AndroidRuntime(10503): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
07-18 16:04:59.240: E/AndroidRuntime(10503): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
07-18 16:04:59.240: E/AndroidRuntime(10503): at dalvik.system.NativeStart.main(Native Method)
我收到这条消息之前的行数较少:
07-18 16:04:56.645: I/Choreographer(10503): Skipped 32 frames! The application may be doing too much work on its main thread.
我知道这是什么意思,但我只是在展示一个对话框而已,这并不需要太多工作!
我希望你们能帮助我!
再见
c
变量是什么? - Ken Wolf