AlertDialog显示错误 Unable to add window token null is not for an application
2013-05-15 11:54
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在listView的onItemClick函数中显示一个AlertDialog,出现如下错误
Xml代码
08-07 21:26:43.506: ERROR/AndroidRuntime(9390): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
后google解决。
原来代码中显示语句如下
Java代码
AlertDialog imageDialog = new AlertDialog.Builder(context).setTitle("状态操作").setItems(items, listener).create();
imageDialog.show();
其中context为在OnCreate中
Java代码
context = getApplicationContext();
得到
异常原因:AlertDialog创建语句
Java代码
public AlertDialog.Builder (Context context)
中,不能使用getApplicationContext()得到的context,而必须使用Activity,所以解决如下
解决方法:语句修改为
Java代码
AlertDialog imageDialog = new AlertDialog.Builder(Activity.this).setTitle("状态操作").setItems(items, listener).create();
imageDialog.show();
其中的Activity为当前Activity的名称
Xml代码
08-07 21:26:43.506: ERROR/AndroidRuntime(9390): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
08-07 21:26:43.506: ERROR/AndroidRuntime(9390): android.view.WindowManager$BadTokenException: Unable to add window -- token null is not for an application
后google解决。
原来代码中显示语句如下
Java代码
AlertDialog imageDialog = new AlertDialog.Builder(context).setTitle("状态操作").setItems(items, listener).create();
imageDialog.show();
AlertDialog imageDialog = new AlertDialog.Builder(context).setTitle("状态操作").setItems(items, listener).create(); imageDialog.show();
其中context为在OnCreate中
Java代码
context = getApplicationContext();
context = getApplicationContext();
得到
异常原因:AlertDialog创建语句
Java代码
public AlertDialog.Builder (Context context)
public AlertDialog.Builder (Context context)
中,不能使用getApplicationContext()得到的context,而必须使用Activity,所以解决如下
解决方法:语句修改为
Java代码
AlertDialog imageDialog = new AlertDialog.Builder(Activity.this).setTitle("状态操作").setItems(items, listener).create();
imageDialog.show();
AlertDialog imageDialog = new AlertDialog.Builder(Activity.this).setTitle("状态操作").setItems(items, listener).create(); imageDialog.show();
其中的Activity为当前Activity的名称
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