在同一 LinearLayout 中更改另一个 TextView 时，TextView 会重新启动 Marquee [英] TextView restarts Marquee when changing another TextView in same LinearLayout
问题描述
我有 LinearLayout 和里面的 2 TextView 都有选框，当我在第一个更新文本然后第二个 TextView 重新启动选框.
I have LinearLayout and inside 2 TextView both have marquee and when I update text in first then second TextView restarts marquee.
<LinearLayout
android:id="@+id/panel"
android:layout_width="320dp"
android:layout_height="match_parent"
android:layout_marginLeft="2dp"
android:layout_marginRight="2dp"
android:gravity="center_vertical"
android:orientation="vertical" >
<TextView
android:id="@+id/first"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee"
android:gravity="bottom|center_horizontal"
android:marqueeRepeatLimit="marquee_forever"
android:singleLine="true" />
<TextView
android:id="@+id/second"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ellipsize="marquee"
android:gravity="top|center_horizontal"
android:marqueeRepeatLimit="marquee_forever"
android:singleLine="true"
/>
</LinearLayout>
我发现如果对于 R.id.first 和 R.id.second 我设置了 layout_width="320dp" 效果不't 发生.但我想设置 android:layout_width="match_parent" 有一些解决方法吗?
I found that if for R.id.first and R.id.second i set layout_width="320dp" the effect don't occurs.
But I want to set android:layout_width="match_parent" there is some workaround?
我发现了类似的问题，但没有解决方案:Android，RelativeLayout 在更改 ImageView 时重新启动 Marquee-TextView相对布局
I found similar problem but without solution: Android, RelativeLayout restarts Marquee-TextView when changing ImageView in same RelativeLayout
推荐答案
我遇到了类似的问题，解决方案是为 Textview 设置固定大小.
I had a similar problem and the solution IS to set fixed size for the Textview.
那么为什么不按程序进行呢?就我而言，它解决了问题.这是我的详细解决方案:
So why not do it progammatically? In my case, it solved the problem. Here is my solution in details :
布局有点复杂，有很多变化的值.这是有趣的部分:
The layout is a bit complex with a lot of changing values. Here is the interesting part :
layout.xml :
layout.xml :
<!-- The height and visibility values change programatically -->
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="30dp"
android:layout_alignParentBottom="true"
android:visibility="gone" >
<FrameLayout>
...
// some code
...
</FrameLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent" />
<!-- My scrolling textview. see below. -->
<!-- The size will be set when -->
<!-- the layout will be draw, -->
<!-- after the Activity.onCreate(). -->
<!-- I removed ALL THE UNECESSARY (I mean -->
<!-- scrollHorizontally, focusable and focusableInTouchMode. -->
<!-- You don't need it !!!!) -->
<fr.cmoatoto.android.widget.ScrollingTextView
android:id="@+id/text"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit="marquee_forever" />
<ImageView
...
// some code
... />
</LinearLayout>
</RelativeLayout>
ScrollingTextView 已在此 answer
The ScrollingTextView has been defined in this answer
又来了:
ScrollingTextView.java :
ScrollingTextView.java :
public class ScrollingTextView extends TextView {
public ScrollingTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public ScrollingTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ScrollingTextView(Context context) {
super(context);
}
@Override
protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
if(focused)
super.onFocusChanged(focused, direction, previouslyFocusedRect);
}
@Override
public void onWindowFocusChanged(boolean focused) {
if(focused)
super.onWindowFocusChanged(focused);
}
@Override
public boolean isFocused() {
return true;
}
}
最后是活动.正如我之前所说，您需要设置固定的宽度和高度，因此我们将使用 onCreate() 中的侦听器以编程方式进行设置:
And finally the Activity. As I said before, You need to set fixed width and height so we will do it programmatically with a listener in the onCreate() :
MyActivity.java :
MyActivity.java :
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout);
TextView textView = ((TextView) findViewById(R.id.home_trafic_text));
textView.setText(getString(R.string.loading));
textView.setEnabled(true); // Thanks to Romain Guy
textView.addOnLayoutChangeListener(new OnLayoutChangeListener() {
@Override
public void onLayoutChange(View v, int left, int top, int right,
int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
LayoutParams params = v.getLayoutParams();
params.width = right - left;
params.height = bottom - top;
params.weight = 0;
v.removeOnLayoutChangeListener(this);
v.setLayoutParams(params);
}
});
}
如果你需要改变方向或类似的东西，请小心，但它对我来说效果很好！
Be careful if you need to change orientation or things like that but it works pretty well for me !
----为 PRE-API-11 编辑---
因为 OnLayoutChangeListener 只存在于 Api v11，所以有一个解决方法(它有效，但我认为它不太好):
Because OnLayoutChangeListener exists only from Api v11, there is a workaround (It works but I think it is less good) :
从您的活动中删除 OnLayoutChangeListener :
Remove the OnLayoutChangeListener from your activity :
MyActivity.java :
MyActivity.java :
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout);
TextView textView = ((TextView) findViewById(R.id.home_trafic_text));
textView.setText(getString(R.string.loading));
textView.setEnabled(true); // Thanks to Romain Guy
}
并在您的 ScrollingTextView 中添加一个 onSizeChanged :
and add a onSizeChanged in your ScrollingTextView :
ScrollingTextView.java :
ScrollingTextView.java :
public class ScrollingTextView extends TextView {
...
// Same code as before
...
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
LayoutParams params = (LayoutParams) getLayoutParams();
params.width = w;
params.height = h;
params.weight = 0;
setLayoutParams(params);
}
}
希望能帮到你！
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