android常见错误

核心提示：/avd/SDK2.2.ini添加android_sdk_home系统变量，其值为想要保存avd的目录，android常见错误(4)，例如我放在D:\Program Files\android\avd下，24、Activity has leaked window that was originally added原因1

/avd/SDK2.2.ini
添加android_sdk_home系统变量，其值为想要保存avd的目录，例如我放在D:\Program Files\android\avd下。

24、Activity has leaked window that was originally added
原因1：重写onKeyDown时，return super. onKeyDown(int keyCode, KeyEvent event)没有修改；

原因2：关闭Activity时，没有关闭AlertDialog造成的。

法一：将return super. onKeyDown(int keyCode, KeyEvent event)改为return false;

法二：@Override

protected void onPause()

{

super.onPause();

//关闭对话框

AlertDialog.dismiss();

}

法三：AndroidManifest.xml中，在相应的<Activity>节点中添加

android:configChanges="orientation|keyboardHidden|navigation"

25、unable to instantiate application
解决方法1：在AndroidManifest.xml中的application里的android:name要去掉；

解决方法2：全局类或者变量私有；

解决方法3：package路径错误。

26、IllegalArgumentException 'Provider "gps" unknown"
locationManager.setTestProviderEnabled(LocationManager.GPS_PROVIDER, true);触发不了LocationManager

加入以下一段参数就好了：

mLocationManager.addTestProvider(LocationManager.GPS_PROVIDER,

"requiresNetwork" == "", "requiresSatellite" == "", "requiresCell" == "", "hasMonetaryCost" == "",

"supportsAltitude" == "", "supportsSpeed" == "",

"supportsBearing" == "", android.location.Criteria.POWER_LOW,

android.location.Criteria.ACCURACY_FINE);