android

问题 I have glibc compiled for arm which is different from Android glibc or the bionic C as the glibc environment I have complied will help in providing more api's. Now I can copy the glibc environment on /system/ folder while Android is running, and on doing chroot I can run my programs on glibc environment. Currently I am compiling glibc and Android separately and then tarring the glibc and copying it on Android emulator sdcard and then untarring it on /system folder and then doing chroot on

问题 While converting my existing app to instant app using this codelab tutorial encountered this error. Plugin with id 'com.android.feature' not found. I have checked that I have Instant app development SDK on Android Studio 3.0 Can someone point what i am missing here? 回答1: I figured out the solution:- I have to add google() repository under Project's build.gradle like this allprojects { repositories { google() jcenter() } } After which i got this error:- to solve which I had to follow first

问题 While converting my existing app to instant app using this codelab tutorial encountered this error. Plugin with id 'com.android.feature' not found. I have checked that I have Instant app development SDK on Android Studio 3.0 Can someone point what i am missing here? 回答1: I figured out the solution:- I have to add google() repository under Project's build.gradle like this allprojects { repositories { google() jcenter() } } After which i got this error:- to solve which I had to follow first

问题 While converting my existing app to instant app using this codelab tutorial encountered this error. Plugin with id 'com.android.feature' not found. I have checked that I have Instant app development SDK on Android Studio 3.0 Can someone point what i am missing here? 回答1: I figured out the solution:- I have to add google() repository under Project's build.gradle like this allprojects { repositories { google() jcenter() } } After which i got this error:- to solve which I had to follow first

问题 I added an imageView in GraphicalLayout but it looks different on my real device than on AVD. I found that I need to add contentDescription in a layout .xml , but when I add: contentDescription="@string/desc" there is an error: "No resource found that matches the given name (at 'contentDescription' with value '@string/desc')" What is this string "desc"? What should it looks like? 回答1: You need to add it in your string.xml file: <string name="desc">your desc goes here</string> Although I don't

问题 I added an imageView in GraphicalLayout but it looks different on my real device than on AVD. I found that I need to add contentDescription in a layout .xml , but when I add: contentDescription="@string/desc" there is an error: "No resource found that matches the given name (at 'contentDescription' with value '@string/desc')" What is this string "desc"? What should it looks like? 回答1: You need to add it in your string.xml file: <string name="desc">your desc goes here</string> Although I don't

问题 I need a file picker in my application, after having tried third party libraries that didn't work (no content), I tried to implement it myself, and I have the same result. The wierdest thing is that Environment.getExternalStorageDirectory().listFiles() returns null here is my code, public class FilePickerActivity extends AppCompatActivity { FilePickerActivity mActivity = this; FilePickerAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate

问题 I need a file picker in my application, after having tried third party libraries that didn't work (no content), I tried to implement it myself, and I have the same result. The wierdest thing is that Environment.getExternalStorageDirectory().listFiles() returns null here is my code, public class FilePickerActivity extends AppCompatActivity { FilePickerActivity mActivity = this; FilePickerAdapter mAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate

问题 It's a specific question and I've done a bit of Android development before, but not so deep into the system management. So I need to create an app which run in background (this part is OK) and to launch automatically an activity of the app when a special shortcut (let's say #123*6) is typed from the phone app software keyboard on the phone. Can you please indicate me if it's possible, and if yes, what API/Component I should use? Can't find something relevant on the Web. 回答1: Ok I finally got

问题 In my app, I allow users to login to and logout from Facebook programmatically. For login, I call: ArrayList<String> permissions = new ArrayList(); permissions.add("manage_pages"); permissions.add("publish_actions"); LoginManager.getInstance().logInWithPublishPermissions(App.activity, permissions); And for logout, I call: FacebookSdk.sdkInitialize(getApplicationContext()); LoginManager.getInstance().logOut(); When I call the logInWithPublishPermissions() method above, the official Facebook