在Android中，获取未接来电和未读短信数量可以通过查询系统ContentProvider实现。使用TelephonyManager获取未接电话数，利用ContentResolver查询SMS ContentProvider获取未读短信数。
Android实现获取未接来电和未读短信数量的方法
在Android开发中，获取未接来电和未读短信的数量是一个常见的需求，本文将详细介绍如何在Android项目中实现这一功能，包括未接来电和未读短信的获取方法，文章结构如下：
未接来电的获取方式
通过广播接收器（BroadcastReceiver）监听新未接来电
直接查询数据库获取未接来电总数
未读短信的获取方式
注册Observer监听数据库变化
查询数据库获取未读短信数量
以下是详细内容：
一、未接来电的获取方式
1、通过广播接收器（BroadcastReceiver）监听新未接来电
当有新的未接来电时，系统会发送一个广播com.android.phone.NotificationMgr.MissedCall_intent，可以通过注册广播接收器来监听这个广播，从而获取未接来电的数量。
final IntentFilter filter = new IntentFilter();
filter.addAction("com.android.phone.NotificationMgr.MissedCall_intent");
registerReceiver(new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action != null && "com.android.phone.NotificationMgr.MissedCall_intent".equals(action)) {
int mMissCallCount = intent.getExtras().getInt("MissedCallNumber");
// 更新UI或者其他处理
}
}
}, filter);需要注意的是，广播接收器只能在有新的未接来电时获取数据，如果有旧的未接来电没有读取，上面的广播是无法获取这些数据的。
2、直接查询数据库获取未接来电总数
为了获取所有未接来电的数量，可以直接查询系统的通话记录数据库。
private int readMissCall() {
int result = 0;
Cursor cursor = getContentResolver().query(CallLog.Calls.CONTENT_URI, new String[]{
Calls.TYPE
}, "type=? and new=?", new String[]{
Calls.MISSED_TYPE + "", "1"
}, "date desc");
if (cursor != null) {
result = cursor.getCount();
cursor.close();
}
return result;
}以上代码通过查询通话记录数据库，获取所有未接来电的数量。
二、未读短信的获取方式
1、注册Observer监听数据库变化
通过注册一个ContentObserver来监听短信数据库的变化，当有新的短信或彩信到达时，可以在onChange方法中获取未读短信的数量。
private ContentObserver newMmsContentObserver = new ContentObserver(new Handler()) {
@Override
public void onChange(boolean selfChange) {
int mNewSmsCount = getNewSmsCount() + getNewMmsCount();
// 更新UI或者其他处理
}
};
private void registerObserver() {
unregisterObserver();
getContentResolver().registerContentObserver(Uri.parse("content://sms"), true, newMmsContentObserver);
getContentResolver().registerContentObserver(MmsSms.CONTENT_URI, true, newMmsContentObserver);
}
private synchronized void unregisterObserver() {
try {
if (newMmsContentObserver != null) {
getContentResolver().unregisterContentObserver(newMmsContentObserver);
}
} catch (Exception e) {
Log.e(TAG, "unregisterObserver fail");
}
}2、查询数据库获取未读短信数量
通过查询短信数据库，可以获取未读短信的数量。
private int getNewSmsCount() {
int result = 0;
Cursor csr = getContentResolver().query(Uri.parse("content://sms"), null, "type = 1 and read = 0", null, null);
if (csr != null) {
result = csr.getCount();
csr.close();
}
return result;
}
private int getNewMmsCount() {
int result = 0;
Cursor csr = getContentResolver().query(Uri.parse("content://mms/inbox"), null, "read = 0", null, null);
if (csr != null) {
result = csr.getCount();
csr.close();
}
return result;
}以上代码通过查询短信和彩信数据库，分别获取未读短信和未读彩信的数量。
三、结合使用示例
以下是一个结合使用上述方法的完整示例，展示如何在Android项目中实现获取未接来电和未读短信数量的功能。
package com.example.myapp; import android.Manifest; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.pm.PackageManager; import android.database.ContentObserver; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import androidx.annotation.NonNull; import androidx.appcompat.app.AppCompatActivity; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; import android.widget.TextView; import android.Manifest; import android.provider.CallLog; import android.telephony.Sms; import java.util.List; import java.util.ArrayList; import static android.content.pm.PackageManager.PERMISSION_GRANTED; import static android.Manifest.permission.READ_SMS; import static android.Manifest.permission.RECEIVE_SMS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.ANSWER_PHONE_CALL; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifest.permission.READ_CONTACTS; import static android.Manifest.permission.CALL_PHONE; import static android.Manifest.permission.USE_SIP; import static android.Manifest.permission.PROCESS_OUTGOING_CALLS; import static android.Manifest.permission.READ_PHONE_STATE; import static android.Manifest.permission.READ_CALL_LOG; import static android.Manifest.permission.WRITE_CALL_LOG; import static android.Manifest.permission.ADD_VOICEMAIL; import static android.Manifentation.*;
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