Android 视图未连接到窗口管理器崩溃
我正在使用ACRA报告应用程序崩溃。我收到一条未附加到窗口管理器的Android 视图未连接到窗口管理器崩溃,android,Android,我正在使用ACRA报告应用程序崩溃。我收到一条未附加到窗口管理器的视图错误消息,并认为我已通过包装pDialog.disclose()修复了它在if语句中: if (pDialog!=null) { if (pDialog.isShowing()) { pDialog.dismiss(); } } 它减少了未连接到窗口管理器的视图崩溃的数量,但我仍然收到一些,我不知道如何解决它 错误消息: java.lang.IllegalArgumentEx
视图
错误消息,并认为我已通过包装pDialog.disclose()修复了它代码>在if语句中:
if (pDialog!=null)
{
if (pDialog.isShowing())
{
pDialog.dismiss();
}
}
它减少了未连接到窗口管理器的视图
崩溃的数量,但我仍然收到一些,我不知道如何解决它
错误消息:
java.lang.IllegalArgumentException: View not attached to window manager
at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:425)
at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:327)
at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:83)
at android.app.Dialog.dismissDialog(Dialog.java:330)
at android.app.Dialog.dismiss(Dialog.java:312)
at com.package.class$LoadAllProducts.onPostExecute(class.java:624)
at com.package.class$LoadAllProducts.onPostExecute(class.java:1)
at android.os.AsyncTask.finish(AsyncTask.java:631)
at android.os.AsyncTask.access$600(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
at dalvik.system.NativeStart.main(Native Method)
代码段:
class LoadAllProducts extends AsyncTask<String, String, String>
{
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute()
{
super.onPreExecute();
pDialog = new ProgressDialog(CLASS.this);
pDialog.setMessage("Loading. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args)
{
// Building Parameters
doMoreStuff("internet");
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url)
{
// dismiss the dialog after getting all products
if (pDialog!=null)
{
if (pDialog.isShowing())
{
pDialog.dismiss(); //This is line 624!
}
}
something(note);
}
}
class LoadAllProducts扩展异步任务
{
/**
*在启动后台线程显示进度对话框之前
* */
@凌驾
受保护的void onPreExecute()
{
super.onPreExecute();
pDialog=新建进度对话框(CLASS.this);
pDialog.setMessage(“正在加载,请稍候…”);
pDialog.setUndeterminate(假);
pDialog.setCancelable(假);
pDialog.show();
}
/**
*从url获取所有产品
* */
受保护的字符串doInBackground(字符串…args)
{
//建筑参数
多莫斯图夫(“互联网”);
返回null;
}
/**
*完成后台任务后,关闭“进度”对话框
* **/
受保护的void onPostExecute(字符串文件\u url)
{
//获取所有产品后关闭对话框
如果(pDialog!=null)
{
if(pDialog.isShowing())
{
pDialog.disclose();//这是第624行!
}
}
某物(注);
}
}
舱单:
<activity
android:name="pagename.CLASS"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize|screenLayout"
android:label="@string/name" >
</activity>
我缺少什么来阻止崩溃的发生?如何重现错误:
在设备上启用此选项:设置->开发人员选项->不保留活动
在执行AsyncTask
并显示ProgressDialog
时,按Home按钮
一旦某个活动被隐藏,Android操作系统将立即销毁该活动。调用onPostExecute
时,活动将处于“完成”状态,ProgressDialog
将不会附加到活动
如何修复它:
检查onPostExecute
方法中的活动状态李>
关闭ondestory
方法中的ProgressDialog
。否则,将引发异常。此异常通常来自活动完成时仍处于活动状态的对话框
请尝试以下固定代码:
public class YourActivity extends Activity {
private void showProgressDialog() {
if (pDialog == null) {
pDialog = new ProgressDialog(StartActivity.this);
pDialog.setMessage("Loading. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
}
pDialog.show();
}
private void dismissProgressDialog() {
if (pDialog != null && pDialog.isShowing()) {
pDialog.dismiss();
}
}
@Override
protected void onDestroy() {
dismissProgressDialog();
super.onDestroy();
}
class LoadAllProducts extends AsyncTask<String, String, String> {
// Before starting background thread Show Progress Dialog
@Override
protected void onPreExecute() {
showProgressDialog();
}
//getting All products from url
protected String doInBackground(String... args) {
doMoreStuff("internet");
return null;
}
// After completing background task Dismiss the progress dialog
protected void onPostExecute(String file_url) {
if (YourActivity.this.isDestroyed()) { // or call isFinishing() if min sdk version < 17
return;
}
dismissProgressDialog();
something(note);
}
}
}
公共类YourActivity扩展活动{
私有void showProgressDialog(){
如果(pDialog==null){
pDialog=新建进度对话框(StartActivity.this);
pDialog.setMessage(“正在加载,请稍候…”);
pDialog.setUndeterminate(假);
pDialog.setCancelable(假);
}
pDialog.show();
}
私有void dismissProgressDialog(){
if(pDialog!=null&&pDialog.isShowing()){
pDialog.disclose();
}
}
@凌驾
受保护的空onDestroy(){
dismissProgressDialog();
super.ondestory();
}
类LoadAllProducts扩展了AsyncTask{
//在启动后台线程显示进度对话框之前
@凌驾
受保护的void onPreExecute(){
showProgressDialog();
}
//从url获取所有产品
受保护的字符串doInBackground(字符串…args){
多莫斯图夫(“互联网”);
返回null;
}
//完成后台任务后,关闭“进度”对话框
受保护的void onPostExecute(字符串文件\u url){
如果(YourActivity.this.isDestroyed()){//或者如果min sdk版本<17,则调用isFinishing()
返回;
}
dismissProgressDialog();
某物(注);
}
}
}
覆盖OnConfiguration更改并关闭进度对话框。
若进度对话框是在纵向创建的,在横向中关闭,那个么它将抛出“视图未附加到窗口管理器”错误
另外,在onPause()、onBackPressed和onDestroy方法中停止进度条并停止异步任务
if(asyncTaskObj !=null && asyncTaskObj.getStatus().equals(AsyncTask.Status.RUNNING)){
asyncTaskObj.cancel(true);
}
在此处查看代码的工作方式:
调用异步任务后,异步任务在后台运行。这是可取的。现在,如果您询问如何查看代码,此异步任务有一个附加到活动的进度对话框:
pDialog = new ProgressDialog(CLASS.this);
您正在将类作为上下文传递给参数。因此,“进度”对话框仍然附加到活动
现在考虑一下情况:
如果我们尝试在异步任务正在进行时使用finish()方法完成活动,则当活动已不存在时,您正试图访问附加到活动的资源(即进度条
)
因此你得到:
java.lang.IllegalArgumentException: View not attached to the window manager
解决方案:
1) 确保在“活动”完成之前关闭或取消对话框
2) 只有在对话框关闭后,即异步任务结束后,才能完成活动。问题可能是活动
已完成
或正在完成
添加一个检查isFinishing
,仅当该检查为false
if (!YourActivity.this.isFinishing() && pDialog != null) {
pDialog.dismiss();
}
isFinishing:检查此活动是否正在完成,原因可能是您调用了它的finish
,或者其他人请求它完成
参考 此问题是因为您的活动在调用dismise函数之前完成。处理异常并检查ADB日志以了解确切原因
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
try {
if (pDialog!=null) {
pDialog.dismiss(); //This is line 624!
}
} catch (Exception e) {
// do nothing
}
something(note);
}
基于@erakitin answer,但也兼容API级别17以下的Android版本。不幸的是,它只在API级别17之后才被支持,所以如果你像我一样瞄准一个较旧的API级别,你将不得不
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
try {
if (pDialog!=null) {
pDialog.dismiss(); //This is line 624!
}
} catch (Exception e) {
// do nothing
}
something(note);
}
public class MainActivity extends Activity {
private TestAsyncTask mAsyncTask;
private ProgressDialog mProgressDialog;
private boolean mIsDestroyed;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (condition) {
mAsyncTask = new TestAsyncTask();
mAsyncTask.execute();
}
}
@Override
protected void onResume() {
super.onResume();
if (mAsyncTask != null && mAsyncTask.getStatus() != AsyncTask.Status.FINISHED) {
Toast.makeText(this, "Still loading", Toast.LENGTH_LONG).show();
return;
}
}
@Override
protected void onDestroy() {
super.onDestroy();
mIsDestroyed = true;
if (mProgressDialog != null && mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
}
}
public class TestAsyncTask extends AsyncTask<Void, Void, AsyncResult> {
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressDialog = ProgressDialog.show(MainActivity.this, "Please wait", "doing stuff..");
}
@Override
protected AsyncResult doInBackground(Void... arg0) {
// Do long running background stuff
return null;
}
@Override
protected void onPostExecute(AsyncResult result) {
// Use MainActivity.this.isDestroyed() when targeting API level 17 or higher
if (mIsDestroyed)// Activity not there anymore
return;
mProgressDialog.dismiss();
// Handle rest onPostExecute
}
}
}
protected void onDestroy ()
{
if(mProgressDialog != null)
if(mProgressDialog.isShowing())
mProgressDialog.dismiss();
mProgressDialog= null;
}
public class MainActivity extends Activity {
private static final String TAG = "MainActivity";
private ProgressDialog mProgressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d(TAG, "onCreate");
new AsyncTask<Void, Void, Void>(){
@Override
protected void onPreExecute() {
mProgressDialog = ProgressDialog.show(MainActivity.this, "", "plz wait...", true);
}
@Override
protected Void doInBackground(Void... nothing) {
try {
Log.d(TAG, "long thread doInBackground");
Thread.sleep(20000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
Log.d(TAG, "long thread onPostExecute");
if (mProgressDialog != null && mProgressDialog.isShowing()) {
mProgressDialog.dismiss();
mProgressDialog = null;
}
Log.d(TAG, "long thread onPostExecute call dismiss");
}
}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
new AsyncTask<Void, Void, Void>(){
@Override
protected Void doInBackground(Void... params) {
try {
Log.d(TAG, "short thread doInBackground");
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
Log.d(TAG, "short thread onPostExecute");
finish();
Log.d(TAG, "short thread onPostExecute call finish");
}
}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
}
@Override
protected void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy");
}
}
if (context instanceof Activity) {
if (!((Activity) context).isFinishing())
dialog.show();
}
if (context instanceof Activity) {
if (!((Activity) context).isFinishing())
dialog.dismiss();
}
ProgressDialog myDialog = new ProgressDialog(getActivity());
myDialog.setOwnerActivity(getActivity());
...
Activity activity = myDialog.getOwnerActivity();
if( activity!=null && !activity.isFinishing()) {
myDialog.dismiss();
}
private int findViewLocked(View view, boolean required) {
final int index = mViews.indexOf(view);
//here, view is decorView,comment by OF
if (required && index < 0) {
throw new IllegalArgumentException("View=" + view + " not attached to window manager");
}
return index;
}
try {
Class<?> windowMgrGloable = Class.forName("android.view.WindowManagerGlobal");
try {
Method mtdGetIntance = windowMgrGloable.getDeclaredMethod("getInstance");
mtdGetIntance.setAccessible(true);
try {
Object windownGlobal = mtdGetIntance.invoke(null,null);
try {
Field mViewField = windowMgrGloable.getDeclaredField("mViews");
mViewField.setAccessible(true);
ArrayList<View> mViews = (ArrayList<View>) mViewField.get(windownGlobal);
int decorViewIndex = mViews.indexOf(pd.getWindow().getDecorView());
Log.i(TAG,"check index:"+decorViewIndex);
if (decorViewIndex < 0) {
return;
}
} catch (NoSuchFieldException e) {
e.printStackTrace();
}
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
} catch (NoSuchMethodException e) {
e.printStackTrace();
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
if (pd.isShowing()) {
pd.dismiss();
}
@Override
protected void onPause() {
super.onPause();
dialog.dismiss();
}
@Override
protected void onDestroy() {
super.onDestroy();
dialog.dismiss();
}
@Override
public void dismiss() {
Window window = getWindow();
if (window == null) {
return;
}
View decor = window.getDecorView();
if (decor != null && decor.getParent() != null) {
super.dismiss();
}
}
if (pDialog instanceof Activity && !((Activity) mContext).isFinishing())
pDialog.show();