我有一个类似的问题,解决方法是为TextView设置固定大小。
那么为什么不通过编程来实现呢?在我的情况下,这种方式解决了问题。下面是我的详细解决方案:
布局有点复杂,有很多变化的值。这里是有趣的部分:
layout.xml:
<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" />
<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>
这个回答中定义了ScrollingTextView。
以下是代码:
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Activity。如我之前所说,您需要设置固定的宽度和高度,因此我们将在onCreate()中使用监听器以编程方式实现:
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);
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,但对我来说它工作得很好!
----针对API-11之前版本的编辑---
由于OnLayoutChangeListener
仅存在于Api v11中,因此有一个解决方法(它可以工作,但我认为它不太好):
从你的活动中删除OnLayoutChangeListener
:
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);
}
请在 ScrollingTextView 中添加一个 onSizeChanged 方法:
ScrollingTextView.java:
public class ScrollingTextView extends TextView {
...
...
@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);
}
}
我希望你能帮到您!
TextView
放在了一个LinearLayout
里面。 - Mateus Pires