无法获取最近拨打的号码 [英] Unable to get recently dialled numbers
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问题描述
我在Android应用程序在那里我有近20已拨电话来获取工作。
I'm working in Android application where I have to fetch last 20 dialled calls.
下面的是我的活动:
public class Calls extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.calls);
TextView dialledCall = (TextView)findViewById(R.id.dialledCall);
Cursor managedCursor;
try {
StringBuffer sb = new StringBuffer();
String strOrder = CallLog.Calls.DATE + " DESC";
managedCursor = managedQuery( CallLog.Calls.CONTENT_URI,null, CallLog.Calls.TYPE + " = " + CallLog.Calls.OUTGOING_TYPE,null, strOrder + " LIMIT 0, 6");
managedCursor.moveToFirst();
int number = managedCursor.getColumnIndex( CallLog.Calls.NUMBER );
int type = managedCursor.getColumnIndex( CallLog.Calls.TYPE );
int date = managedCursor.getColumnIndex( CallLog.Calls.DATE);
int duration = managedCursor.getColumnIndex( CallLog.Calls.DURATION);
sb.append( "Dialled Calls :");
while ( managedCursor.moveToNext() ) {
String phNumber = managedCursor.getString( number );
String callType = managedCursor.getString( type );
String callDate = managedCursor.getString( date );
Date callDayTime = new Date(Long.valueOf(callDate));
String callDuration = managedCursor.getString( duration );
String dir = null;
int dircode = Integer.parseInt( callType );
switch( dircode ) {
case CallLog.Calls.OUTGOING_TYPE:
dir = "Dialled";
break;
}
sb.append( "\nPhone Number : "+phNumber +" \nCall Type : "+dir+" \nCall Date : "+callDayTime+" \nCall duration in sec : "+callDuration );
sb.append("\n----------------------------------");
}
sb.append("\n==================================");
sb.append("\n\n");
managedCursor.close();
Toast.makeText(this, "Eureka :)", Toast.LENGTH_SHORT).show();
managedCursor = managedQuery( CallLog.Calls.CONTENT_URI,null, CallLog.Calls.TYPE + " = " + CallLog.Calls.INCOMING_TYPE,null, strOrder + " LIMIT 0, 6");
managedCursor.moveToFirst();
int number1 = managedCursor.getColumnIndex( CallLog.Calls.NUMBER );
int type1 = managedCursor.getColumnIndex( CallLog.Calls.TYPE );
int date1 = managedCursor.getColumnIndex( CallLog.Calls.DATE);
int duration1 = managedCursor.getColumnIndex( CallLog.Calls.DURATION);
sb.append( "Received Calls :");
while ( managedCursor.moveToNext() ) {
String phNumber1 = managedCursor.getString( number1 );
String callType1 = managedCursor.getString( type1 );
String callDate1 = managedCursor.getString( date1 );
Date callDayTime1 = new Date(Long.valueOf(callDate1));
String callDuration1 = managedCursor.getString( duration1 );
String dir1 = null;
int dircode = Integer.parseInt( callType1 );
switch( dircode ) {
case CallLog.Calls.INCOMING_TYPE:
dir1 = "Received";
break;
}
sb.append( "\nPhone Number : "+phNumber1 +" \nCall Type : "+dir1+" \nCall Date : "+callDayTime1+" \nCall duration in sec : "+callDuration1 );
sb.append("\n----------------------------------");
}
sb.append("\n==================================");
sb.append("\n\n");
managedCursor.close();
Toast.makeText(this, "Eureka :) 1", Toast.LENGTH_SHORT).show();
managedCursor.close();
}
catch (NullPointerException e) {
// TODO: handle exception
Toast.makeText(this, "Sorry Man :(", Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}
这里是相应的XML文件:
And here is the corresponding XML file:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true" >
<Linearlayout android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:orientation="vertical">
<TextView
android:id="@+id/dialledCall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:textSize="13dp" />
</Linearlayout>
</ScrollView>
输出:我能得到前5个已拨号码,但接电话我越来越甚的消息
我是什么做错了吗?
推荐答案
最有可能你缺少一个权限:
Most probably you are missing a permission:
<uses-permission android:name="android.permission.READ_CONTACTS" />
或者你的循环是不正确的,尝试这种循环,而不是:
Or your loop is not correct, try this kind of loop instead:
int count = 0;
if (cursor.moveToFirst()) {
do {
// Read your row here
++count;
} while (cursor.moveToNext() && count<20);
}
cursor.close();
这将是更有效的也以限制直接在查询而不是在环本身的行数:
It would be more efficient also to limit the number of rows directly in the query rather than in the loop itself:
managedQuery( CallLog.Calls.CONTENT_URI, null,
CallLog.Calls.TYPE + " = " + CallLog.Calls.OUTGOING_TYPE,
null, strOrder + " LIMIT 0, 20");
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