1
我有一个ImageButton,它应该包含文本。 为此,我使用LayerDrawable(在CustomViewFactory类的createImage方法) 总之使用LayerDrawable背景Autoresize ImageButton
public class CustomViewFactory extends ImageButton {
public CustomViewFactory createButton(String text) {
this.setBackgroundDrawable(createImage(R.drawable.back_configuration, text));
return this;
}
back_configuration.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/back_button_pressed" adroid:state_pressed="true"> </item>
<item android:drawable="@drawable/back_button_normal"></item>
<item android:drawable="@drawable/back_button_pressed" android:state_focused="true"/>
</selector>
back_button_normal和back_button_pressed - 9补丁PNG文件。
public LayerDrawable createImage(int resource, String text){
Drawable [] layers = new Drawable[2];
layers[0] = new TextDrawable(text);
layers[1] = r.getDrawable(R.drawable.back_configuration);
return new LayerDrawable(resource);
}
public class TextDrawable extends Drawable {
private final String text;
private final Paint paint;
public TextDrawable(String text) {
this.text = text;
this.paint = new Paint();
paint.setColor(Color.WHITE);
paint.setFilterBitmap(true);
paint.setTextSize(textSize);
paint.setAntiAlias(true);
paint.setFakeBoldText(true);
paint.setStyle(Paint.Style.FILL);
paint.setTextAlign(Paint.Align.LEFT);
}
@Override
public void draw(Canvas canvas) {
canvas.drawText(text, 0, 0, paint);
}
@Override
public void setAlpha(int alpha) {
paint.setAlpha(alpha);
}
@Override
public void setColorFilter(ColorFilter cf) {
paint.setColorFilter(cf);
}
@Override
public int getOpacity() {
return PixelFormat.TRANSLUCENT;
}
}
问题。如果文字很大,则会被切断。如何使ImageButton本身的大小取决于文本内部。什么是替代方法。
如果我使用该按钮,图像被拉伸按钮
我为我的英语道歉。非常感谢你。
谢谢!这真的很有用。有一个问题。文字不在中间。 http://imageshack.us/photo/my-images/855/26032627.png/ – 2012-08-15 10:13:07
您可以将textView的重力属性设置为中心 – Amt87 2012-08-15 10:48:37
android:gravity =“center”...如果答案适合您,您可以勾选它在左侧 – Amt87 2012-08-15 10:49:31