Question

对于我的情况，即使在我尝试了stackoverflow中提供的多个解决方案后，选取框仍然无效。

这是我的xml内容： ...

           .... // XML for Other Views here

            <TextView android:id="@+id/progress"
                  android:layout_width="0dp"
                  android:layout_height="fill_parent"
                  android:singleLine="true"
                  android:ellipsize="marquee"
                  android:focusable="true"
                  android:clickable="true"
                  android:focusableInTouchMode="true"
                  android:scrollHorizontally="true"
                  android:marqueeRepeatLimit="marquee_forever"
                  android:gravity="center"
                  android:layout_weight="2"
                  />
    </LinearLayout>

...

设置了所有需要（或可能需要）的属性，对吗？

下面是我在代码中使用TextView的方式：

1）此TextView是片段的一个组件。

2）此组件位于Fragment的回调函数中：onAcitvityCreated()，如下所示：

m_progressView = (TextView) m_activity.findViewById(R.id.progress);

注意：m_activity是片段所属的活动。

3）然后在setSelected(true)之后调用setText()，如下所示：

            m_activity.postDelayed(new Runnable(){
                public void run()
                {
                    m_progressView.setEllipsize(TruncateAt.MARQUEE);

                    m_progressView.setText(new String("第" + g_currentPage + "页    共" + g_totalPages + "页"));

                    m_progressView.setSelected(true);


                }
            }, 500);

但它不起作用。

当我打开eclipse的logcat时，我得到循环日志，如：

07-28 19:30:31.639: I/SurfaceTextureClient(20944): [STC::queueBuffer]     this:0x5a8be558) fps:1.93, dur:1038.04, max:549.31, min:488.73

07-28 19:30:32.645: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.99, dur:1006.23, max:507.58, min:498.65

07-28 19:30:33.661: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.97, dur:1015.59, max:512.58, min:503.00

07-28 19:30:34.716: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.90, dur:1054.77, max:543.55, min:511.22

07-28 19:30:36.230: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.98, dur:1514.01, max:534.81, min:460.85

07-28 19:30:37.733: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:2.00, dur:1502.85, max:507.72, min:493.80

07-28 19:30:38.761: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.94, dur:1028.36, max:535.38, min:492.98

07-28 19:30:39.771: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.98, dur:1009.94, max:506.94, min:503.01

07-28 19:30:40.772: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:2.00, dur:1000.87, max:514.48, min:486.39

07-28 19:30:41.815: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.92, dur:1043.46, max:531.82, min:511.64

07-28 19:30:42.860: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.91, dur:1044.70, max:543.25, min:501.45

07-28 19:30:44.357: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:2.00, dur:1496.71, max:508.20, min:481.11

07-28 19:30:45.381: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.95, dur:1024.39, max:531.66, min:492.74

07-28 19:30:46.420: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:2.89, dur:1039.11, max:511.83, min:66.67

07-28 19:30:47.476: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.89, dur:1056.07, max:531.04, min:525.03

07-28 19:30:48.481: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.99, dur:1004.86, max:511.82, min:493.04

07-28 19:30:49.493: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.98, dur:1011.62, max:533.93, min:477.69

07-28 19:30:50.530: I/SurfaceTextureClient(20944): [STC::queueBuffer] (this:0x5a8be558) fps:1.93, dur:1037.57, max:563.91, min:473.67

似乎字幕机制正在根据这些日志工作，但为什么文本不会移动？

非常感谢。

Answer 1

你可以做这样的事情

<TextView
    android:id="@+id/fact"
    android:layout_width="200dp"
    android:layout_height="40dip"
    android:duplicateParentState="true"
    android:ellipsize="marquee"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:marqueeRepeatLimit="marquee_forever"
    android:scrollHorizontally="true"
    android:singleLine="true"
    android:text="Loading... More text to see if it spans or not and want more">

    <requestFocus
        android:duplicateParentState="true"
        android:focusable="true"
        android:focusableInTouchMode="true" />
</TextView>

调用TextView.setSelected后，TextView Marquee无法工作（true）

1 个答案: