安卓：静态字符串得到最后呼出（）方法 [英] Android : static String get Last Outgoing Call() method

问题描述

我想使用静态字符串getLastOutgoingCall（）方法，以拉最近呼出电话的时间，但我不知道怎么办！
我与Java编程（我通常程序C ++）

I'd like to use the static String getLastOutgoingCall() method in order to pull the duration of the last outgoing phone call but I don't know how ! I'm a beginner with java programming (I usually program in c++)

这是我发现使用古老的API和他们没有用我说的方法的教程。

The tutorials that I found use the ancient APIs and none of them use the method I'm talking about.

推荐答案

我希望我没有misinter preTED你的问题。如果是这样，请让我知道。

I hope I have not misinterpreted your question. If so, please let me know.

该方法字符串getLastOutgoingCall（上下文的背景下）从 android.provider.CallLog.Calls ，根据<一个href=\"http://developer.android.com/reference/android/provider/CallLog.Calls.html#getLastOutgoingCall(android.content.Context)\"相对=nofollow>文档，返回

最后一个电话号码拨打（拨出）或一个空字符串如果没有
  还存在

The last phone number dialed (outgoing) or an empty string if none exist yet.

因此​​，使用这种方法，你不能检索最近呼出通话时间。

So, you can't retrieve the last outgoing call duration using that method.

要获得最后拨出电话时长，您可以查询 CallLog.Calls.CONTENT_URI 来获取这些信息。

To get the last outgoing call duration, you can query the CallLog.Calls.CONTENT_URI to retrieve this info.

您可以使用的方法是这样的：

You can use a method like this:

public String getLastOutgoingCallDuration(final Context context) {
    String output = null;

    final Uri callog = CallLog.Calls.CONTENT_URI;
    Cursor cursor = null;

    try {
        // Query all the columns of the records that matches "type=2"
        // (outgoing) and orders the results by "date"
        cursor = context.getContentResolver().query(callog, null,
                CallLog.Calls.TYPE + "=" + CallLog.Calls.OUTGOING_TYPE,
                null, CallLog.Calls.DATE);
        final int durationCol = cursor
                .getColumnIndex(CallLog.Calls.DURATION);

        // Retrieve only the last record to get the last outgoing call
        if (cursor.moveToLast()) {
            // Retrieve only the duration column
            output = cursor.getString(durationCol);
        }
    } finally {
        // Close the resources
        if (cursor != null) {
            cursor.close();
        }
    }

    return output;
}

注意：要执行这个查询，你需要将下列权限添加到您的清单：

Note: To perform this query you will need to add the following permission to your manifest:

<uses-permission android:name="android.permission.READ_CALL_LOG" />

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根据你自己的答案编辑：

---

Edit based on your own answer:

您需要调用 getLastOutgoingCallDuration（）您的活动的的onCreate（）方法：

You need to call the getLastOutgoingCallDuration() on the onCreate() method of your Activity:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main); // Here you need to set the name of your xml

    TextView displayDuration;
    displayDuration = (TextView)  findViewById(R.id.textView2);

    String duration = getLastOutgoingCallDuration(this);

    displayDuration.setText(output + "sec");
}

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