我正在使用WebView Activity从重定向网址获取access_token，然后在选择access_token时使用onBackPressed()完成WebView活动。问题是，在MainActivity成功从WebViewActivity接收access_token后，应用程序在大约5秒内崩溃。如果我再次启动我的应用程序（不破坏它），则不会出现问题。
private void startWebView(String url) {
webView = (WebView) findViewById(R.id.webview);
webView.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
Log.d(TAG, url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
// get url
String currentUrl = view.getUrl();
Log.i(TAG, "current Url is: " + currentUrl);
// if the redirect url returns access_token, pick access_token
if (currentUrl.contains("http://google.com/#access_token=")) {
String[] r = url.split("#");
String[] tokens = r[1].split("&");
String accessToken = tokens[0].replace("access_token=", "");
Log.i(TAG, "! " + accessToken);
if (accessToken != null) {
resultAccessToken = accessToken;
Intent intent = new Intent().putExtra("access_token", accessToken);
setResult(RESULT_OK, intent);
webView.clearHistory();
onBackPressed();
}
}
}
});
webView.loadUrl(url);
}
logcat的：
libcore.io.ErrnoException: read failed: EAGAIN (Try again)
at libcore.io.Posix.readBytes(Native Method)
at libcore.io.Posix.read(Posix.java:128)
at libcore.io.BlockGuardOs.read(BlockGuardOs.java:149)
at com.android.server.am.NativeCrashListener.consumeNativeCrashData(NativeCrashListener.java:240)
at com.android.server.am.NativeCrashListener.run(NativeCrashListener.java:138)
10-09 19:04:52.350 4759-4759/? E/memtrack﹕ Couldn't load memtrack module (No such file or directory)
10-09 19:04:52.350 4759-4759/? E/android.os.Debug﹕ failed to load memtrack module: -2
10-09 19:04:54.726 4781-4781/? E/memtrack﹕ Couldn't load memtrack module (No such file or directory)
10-09 19:04:54.730 4781-4781/? E/android.os.Debug﹕ failed to load memtrack module: -2
10-09 19:04:56.306 4791-4791/com.example.android_WebViewApp3 E/AudioManagerAndroid﹕ BLUETOOTH permission is missing!
10-09 19:04:56.786 4791-4791/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache
10-09 19:04:56.786 4791-4791/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 8192
10-09 19:04:56.810 4791-4791/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
10-09 19:04:56.810 4791-4791/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 8192
10-09 19:04:57.702 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:58.266 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:58.382 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:58.454 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:58.538 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:58.626 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:58.670 4791-4791/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:04:59.902 4791-4791/com.example.android_WebViewApp3 E/libEGL﹕ call to OpenGL ES API with no current context (logged once per thread)
10-09 19:04:59.938 4791-4791/com.example.android_WebViewApp3 A/libc﹕ Fatal signal 6 (SIGABRT) at 0x000012b7 (code=-6), thread 4791 (oid_WebViewApp3)
10-09 19:05:02.198 581-610/system_process E/InputDispatcher﹕ channel '529580ac com.example.android_WebViewApp3/com.example.android_WebViewApp3.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
10-09 19:05:02.198 581-610/system_process E/InputDispatcher﹕ channel '5295a4d8 Toast (server)' ~ Channel is unrecoverably broken and will be disposed!
10-09 19:05:08.342 4850-4850/com.example.android_WebViewApp3 E/AudioManagerAndroid﹕ BLUETOOTH permission is missing!
10-09 19:05:08.814 4850-4850/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache
10-09 19:05:08.818 4850-4850/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 8192
10-09 19:05:08.834 4850-4850/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
10-09 19:05:08.834 4850-4850/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 8192
10-09 19:05:09.734 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:10.342 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:10.442 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:10.590 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:10.670 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:10.726 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:10.774 4850-4850/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:05:16.418 4850-4850/com.example.android_WebViewApp3 E/libEGL﹕ call to OpenGL ES API with no current context (logged once per thread)
10-09 19:05:55.174 4905-4905/? E/memtrack﹕ Couldn't load memtrack module (No such file or directory)
10-09 19:05:55.174 4905-4905/? E/android.os.Debug﹕ failed to load memtrack module: -2
10-09 19:05:55.530 581-610/system_process E/InputDispatcher﹕ channel '529c8090 com.example.android_WebViewApp3/com.example.android_WebViewApp3.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
10-09 19:05:58.774 4927-4927/? E/memtrack﹕ Couldn't load memtrack module (No such file or directory)
10-09 19:05:58.778 4927-4927/? E/android.os.Debug﹕ failed to load memtrack module: -2
10-09 19:05:59.666 801-801/com.android.launcher E/EGL_genymotion﹕ egl: current context mark for deletion
10-09 19:06:00.250 4937-4937/com.example.android_WebViewApp3 E/AudioManagerAndroid﹕ BLUETOOTH permission is missing!
10-09 19:06:00.758 4937-4937/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from GradienCache
10-09 19:06:00.762 4937-4937/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 8192
10-09 19:06:00.782 4937-4937/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
10-09 19:06:00.786 4937-4937/com.example.android_WebViewApp3 E/OpenGLRenderer﹕ MAX_TEXTURE_SIZE: 8192
10-09 19:06:02.138 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:02.742 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:02.826 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:02.886 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:02.938 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:02.990 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:03.054 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:03.134 4937-4937/com.example.android_WebViewApp3 E/eglCodecCommon﹕ **** ERROR unknown type 0x0 (glSizeof,73)
10-09 19:06:05.466 4937-4937/com.example.android_WebViewApp3 E/libEGL﹕ call to OpenGL ES API with no current context (logged once per thread)