我在我的 XML 文件上创建了一个按钮。我想单击该按钮，以便显示 Android 设备的通话记录。
我已经检查了 how-make-call-log-app-in-android但我仍然不确定如何在单击按钮时显示通话记录，
谁能告诉我如何去做。
这是我的 XML：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:baselineAligned="true"
android:orientation="horizontal" >
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="SEARCH" />
</LinearLayout>
在我的代码下面，但有一些错误。我还没有设置我的按钮OnClickListener：
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CallLog;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Contacts;
import android.provider.ContactsContract.CommonDataKinds.Email;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class CallLogActivity extends Activity {
/** Called when the activity is first created. */
@Override
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String[] projection = newString[{CallLog.Calls.NUMBER,CallLog.Calls.DATE,CallLog.Calls.CACHED_NAME};
Uri contacts = CallLog.Calls.CONTENT_URI;
Cursor managedCursor = managedQuery(contacts, projection,null,null, CallLog.Calls.DATE + " ASC");
getColumnData(managedCursor);
}
private void getColumnData(Cursor cur){
try{
if (cur.moveToFirst()) {
String name;
String number;
long date;
int nameColumn = cur.getColumnIndex(CallLog.Calls.CACHED_NAME);
int numberColumn = cur.getColumnIndex(CallLog.Calls.NUMBER);
int dateColumn = cur.getColumnIndex(CallLog.Calls.DATE);
System.out.println("Reading Call Details: ");
do {
name = cur.getString(nameColumn);
number = cur.getString(numberColumn);
date = cur.getLong(dateColumn);
System.out.println(number + ":"+ new Date(date) +":"+name);
} while (cur.moveToNext());
}
}
finally{
cur.close();
}
}
}