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Catherine22Catherine22
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[Android] read call logs content provider
next: add bottom sheet, provide updating, insertion and deletion of content provider bugs: user dictionary content provider is not working
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‎README.md

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@@ -88,7 +88,7 @@ To see more details by automatically importing icons with Android Studio Image A
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## Saving UI states
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1. ```ViewModel```
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2. ```onSaveInstanceState()```
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Have ```Do not keep activities``` be selected on system Settings page to test ```onSaveInstanceState``` and ```onRestoreInstanceState```
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Have ```Do not keep activities``` selected on system Settings page to test ```onSaveInstanceState``` and ```onRestoreInstanceState```
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Code: [LifecycleActivity]
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3. Persistent in local storage for complex or large data
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@@ -149,6 +149,40 @@ Foreground services and JobScheduler are alternatives to run app in the backgrou
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Code: [AppComponentsActivity], [MusicPlayerService], [MusicPlayerJobScheduler], [AndroidManifest]
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[Read more](https://developer.android.com/guide/components/services)
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## Broadcast receiver
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You could either register receivers by dynamically extending ```BroadcastReceiver``` or statically declaring an implementation with the ```<receiver>``` tag in the AndroidManifest.xml
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Code: [NetworkHealthService], [NetworkHealthJobScheduler], [InternetConnectivityReceiver]
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[Read more](https://developer.android.com/reference/android/content/BroadcastReceiver)
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## Content Provider
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Create your own content providers to share data with other applications or access existing content providers in another applications.
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### System content providers
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**In order to get the uri path, we are going to have a look at android source code.**
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1. Go to https://android.googlesource.com/platform/packages/providers/ and pick out needed providers
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2. Search ```<provider>``` tag in AndroidManifest, e.g. in https://android.googlesource.com/platform/packages/providers/UserDictionaryProvider/+/refs/tags/android-9.0.0_r33/AndroidManifest.xml
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```xml
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<provider android:name="CallLogProvider"
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android:authorities="call_log"
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android:syncable="false" android:multiprocess="false"
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android:exported="true"
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android:readPermission="android.permission.READ_CALL_LOG"
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android:writePermission="android.permission.WRITE_CALL_LOG">
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</provider>
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```
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3. Now we have host name (```android:authorities```), then, go to [CallLogProvider] (```android:name```) to get the table name
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4. Search "urimatcher" in [UserDictionaryProvider], and have a bunch of ```sURIMatcher.addURI()``` found. We figure out that one url is "content://call_log/calls"
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5. Grant permission: ```<uses-permission android:name="android.permission.READ_CALL_LOG" />```, ```<uses-permission android:name="android.permission.WRITE_CALL_LOG" />```
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**CRUD - Create**
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**CRUD - Read**
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**CRUD - Update**
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**CRUD - Delete**
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# Jetpack
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@@ -166,6 +200,11 @@ Code: [AppComponentsActivity], [MusicPlayerService], [MusicPlayerJobScheduler],
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[MusicPlayerService]:<https://github.com/Catherine22/AAD-Preparation/blob/master/app/src/main/java/com/catherine/materialdesignapp/activities/MusicPlayerService.java>
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[MusicPlayerJobScheduler]:<https://github.com/Catherine22/AAD-Preparation/blob/master/app/src/main/java/com/catherine/materialdesignapp/activities/MusicPlayerJobScheduler.java>
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[AndroidManifest]:<https://github.com/Catherine22/AAD-Preparation/blob/master/app/src/main/AndroidManifest.xml>
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[InternetConnectivityReceiver]:<https://github.com/Catherine22/AAD-Preparation/blob/master/app/src/main/java/com/catherine/materialdesignapp/receivers/InternetConnectivityReceiver.java>
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[NetworkHealthService]:<https://github.com/Catherine22/AAD-Preparation/blob/master/app/src/main/java/com/catherine/materialdesignapp/activities/NetworkHealthService.java>
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[NetworkHealthJobScheduler]:<https://github.com/Catherine22/AAD-Preparation/blob/master/app/src/main/java/com/catherine/materialdesignapp/activities/NetworkHealthJobScheduler.java>
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[CallLogProvider]:<https://android.googlesource.com/platform/packages/providers/ContactsProvider/+/refs/tags/android-9.0.0_r34/src/com/android/providers/contacts/CallLogProvider.java>
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[Grid and keyline shapes]:<https://material.io/design/iconography/#grid-keyline-shapes>
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‎app/src/main/AndroidManifest.xml

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@@ -3,8 +3,11 @@
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package="com.catherine.materialdesignapp">
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<uses-permission android:name="android.permission.INTERNET" />
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <!--network health-->
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<uses-permission android:name="android.permission.WAKE_LOCK" />
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<uses-permission android:name="android.permission.READ_USER_DICTIONARY" /> <!--content provider-->
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<uses-permission android:name="android.permission.READ_CALL_LOG" /> <!--content provider-->
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<uses-permission android:name="android.permission.WRITE_CALL_LOG" /> <!--content provider-->
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<application
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android:name=".MyApplication"

‎app/src/main/java/com/catherine/materialdesignapp/activities/AppComponentsActivity.java

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@@ -1,26 +1,36 @@
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package com.catherine.materialdesignapp.activities;
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import android.Manifest;
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import android.annotation.TargetApi;
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import android.app.job.JobInfo;
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import android.app.job.JobScheduler;
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import android.content.ComponentName;
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import android.content.Intent;
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import android.os.Build;
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import android.os.Bundle;
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import android.support.annotation.Nullable;
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import android.support.v7.widget.Toolbar;
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import android.util.Log;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.widget.Button;
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import android.widget.RadioButton;
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import android.widget.RadioGroup;
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import com.catherine.materialdesignapp.R;
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import com.catherine.materialdesignapp.content_providers.CallLogDao;
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import com.catherine.materialdesignapp.content_providers.UserDictionaryDao;
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import com.catherine.materialdesignapp.listeners.OnRequestPermissionsListener;
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import com.catherine.materialdesignapp.models.Word;
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import com.catherine.materialdesignapp.services.MusicPlayerJobScheduler;
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import com.catherine.materialdesignapp.services.MusicPlayerService;
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import java.util.List;
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import static com.catherine.materialdesignapp.services.BusyJobs.JOB_MUSIC_PLAYER;
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public class AppComponentsActivity extends BaseActivity implements OnClickListener {
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public final static String TAG = AppComponentsActivity.class.getSimpleName();
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private enum ServiceType {
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FOREGROUND, BACKGROUND, JOB_SCHEDULER
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}
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});
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}
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@Override
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}
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break;
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case R.id.btn_broadcast_receivers:
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// TODO add one more broadcast receiver
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break;
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case R.id.btn_content_providers:
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// UserDictionaryDao dao = new UserDictionaryDao();
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// dao.query();
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//
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// Word word = new Word("new word", 999, "new shortcut", "en_US");
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// dao.insert(word);
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String[] permissions = {Manifest.permission.READ_CALL_LOG, Manifest.permission.WRITE_CALL_LOG};
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getPermissions(permissions, new OnRequestPermissionsListener() {
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@Override
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public void onGranted() {
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CallLogDao callLogDao = new CallLogDao();
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callLogDao.read();
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}
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@Override
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public void onDenied(@Nullable List<String> deniedPermissions) {
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Log.d(TAG, "onDenied");
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}
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@Override
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public void onRetry() {
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Log.d(TAG, "onRetry");
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}
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});
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break;
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}
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}

‎app/src/main/java/com/catherine/materialdesignapp/content_providers/CallLogDao.java

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package com.catherine.materialdesignapp.content_providers;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.database.ContentObserver;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.Handler;
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import android.provider.CallLog;
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import android.util.Log;
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import com.catherine.materialdesignapp.MyApplication;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Locale;
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public class CallLogDao extends Dao<String> {
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public final static String TAG = CallLogDao.class.getSimpleName();
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private final Uri database = Uri.parse("content://call_log/calls");
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private ContentResolver contentResolver;
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public CallLogDao() {
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contentResolver = MyApplication.INSTANCE.getApplicationContext().getContentResolver();
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}
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public List<String> read() {
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String[] projection = {CallLog.Calls.NUMBER};
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Cursor cursor = contentResolver.query(database, projection, null, null, null);
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List<String> words = new LinkedList<>();
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if (cursor != null) {
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Log.d(TAG, "cursor counts: " + cursor.getCount());
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while (cursor.moveToNext()) {
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String number = cursor.getString(cursor.getColumnIndex(CallLog.Calls.NUMBER));
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words.add(number);
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Log.d(TAG, "Log: " + number);
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}
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cursor.close();
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}
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return words;
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}
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@Override
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void insert(String newValue) {
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ContentValues newValues = new ContentValues();
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newValues.put(CallLog.Calls.NUMBER, newValue);
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contentResolver.registerContentObserver(database, true, new CallLogObserver(new Handler()));
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Uri newUri = contentResolver.insert(database, newValues);
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Log.d(TAG, String.format(Locale.US, "new uri: %s", newUri.getPath()));
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}
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@Override
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void update(String oldValue, String newValue) {
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}
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@Override
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void delete(String value) {
60+
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}
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private class CallLogObserver extends ContentObserver {
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/**
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* Creates a content observer.
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*
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* @param handler The handler to run {@link #onChange} on, or null if none.
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*/
70+
CallLogObserver(Handler handler) {
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super(handler);
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}
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@Override
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public void onChange(boolean selfChange) {
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super.onChange(selfChange);
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Log.d(TAG, String.format(Locale.US, "onChange: %b", selfChange));
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}
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@Override
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public void onChange(boolean selfChange, Uri uri) {
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super.onChange(selfChange, uri);
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Log.d(TAG, String.format(Locale.US, "onChange: %b, %s", selfChange, uri.getPath()));
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contentResolver.unregisterContentObserver(this);
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}
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}
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}

‎app/src/main/java/com/catherine/materialdesignapp/content_providers/Dao.java

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package com.catherine.materialdesignapp.content_providers;
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import java.util.List;
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public abstract class Dao<T> {
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abstract List<T> read();
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abstract void insert(T newValue);
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abstract void update(T oldValue, T newValue);
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abstract void delete(T value);
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}

‎app/src/main/java/com/catherine/materialdesignapp/content_providers/UserDictionaryDao.java

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package com.catherine.materialdesignapp.content_providers;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.database.ContentObserver;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.Handler;
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import android.provider.UserDictionary;
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import android.util.Log;
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import com.catherine.materialdesignapp.MyApplication;
13+
import com.catherine.materialdesignapp.models.Word;
14+
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import java.util.LinkedList;
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import java.util.List;
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public class UserDictionaryDao {
19+
public final static String TAG = UserDictionaryDao.class.getSimpleName();
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private final Uri database = Uri.parse("content://user_dictionary/words");
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private ContentResolver contentResolver;
22+
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public UserDictionaryDao() {
24+
contentResolver = MyApplication.INSTANCE.getApplicationContext().getContentResolver();
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// contentResolver.registerContentObserver(database, true, new UserDictionaryObserver(new Handler()));
26+
}
27+
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public List<Word> query() {
29+
String[] projection = {UserDictionary.Words.WORD, UserDictionary.Words.FREQUENCY, UserDictionary.Words.SHORTCUT, UserDictionary.Words.LOCALE};
30+
Cursor cursor = contentResolver.query(database, projection, null, null, null);
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List<Word> words = new LinkedList<>();
32+
if (cursor != null) {
33+
Log.d(TAG, "cursor counts: " + cursor.getCount());
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while (cursor.moveToNext()) {
35+
Word word = new Word();
36+
word.word = cursor.getString(cursor.getColumnIndex(UserDictionary.Words.WORD));
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word.frequency = cursor.getInt(cursor.getColumnIndex(UserDictionary.Words.FREQUENCY));
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word.shortcut = cursor.getString(cursor.getColumnIndex(UserDictionary.Words.SHORTCUT));
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word.locale = cursor.getString(cursor.getColumnIndex(UserDictionary.Words.SHORTCUT));
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words.add(word);
41+
}
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cursor.close();
43+
}
44+
return words;
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}
46+
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public void insert(Word word) {
48+
ContentValues newValues = new ContentValues();
49+
newValues.put(UserDictionary.Words.SHORTCUT, word.locale);
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newValues.put(UserDictionary.Words.LOCALE, word.locale);
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newValues.put(UserDictionary.Words.WORD, word.word);
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newValues.put(UserDictionary.Words.FREQUENCY, word.frequency);
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contentResolver.registerContentObserver(database, true, new UserDictionaryObserver(new Handler()));
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contentResolver.insert(database, newValues);
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}
56+
57+
private class UserDictionaryObserver extends ContentObserver {
58+
UserDictionaryObserver(Handler handler) {
59+
super(handler);
60+
}
61+
62+
@Override
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public void onChange(boolean selfChange, Uri uri) {
64+
super.onChange(selfChange, uri);
65+
Log.d(TAG, "onChange:" + selfChange + "/uri:" + uri);
66+
contentResolver.unregisterContentObserver(this);
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}
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@Override
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public boolean deliverSelfNotifications() {
71+
return super.deliverSelfNotifications();
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}
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@Override
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public void onChange(boolean selfChange) {
76+
super.onChange(selfChange);
77+
Log.d(TAG, "onChange:" + selfChange);
78+
contentResolver.unregisterContentObserver(this);
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}
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}
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}

‎app/src/main/java/com/catherine/materialdesignapp/models/Word.java

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package com.catherine.materialdesignapp.models;
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public class Word {
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public String word;
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public int frequency;
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public String shortcut;
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public String locale;
8+
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public Word() {
10+
11+
}
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public Word(String word, int frequency, String shortcut, String locale) {
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this.word = word;
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this.frequency = frequency;
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this.shortcut = shortcut;
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this.locale = locale;
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}
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}

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