是否可以在Android TextView周围绘制边框?
当前回答
您可以为文本视图创建自定义背景。步骤
转到您的项目。转到资源,右键单击可绘制。单击新建->可绘制资源文件为您的文件命名在文件中粘贴以下代码
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<stroke
android:width="1dp"
android:color="@color/colorBlack" />
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<corners android:radius="6dp" />
<solid android:color="#ffffffff" />
</shape>
对于要将其用作背景的文本视图,android:background=“@drawbable/your_fileName”
其他回答
我通过扩展文本视图并手动绘制边框解决了这个问题。我甚至添加了这样的选项,您可以选择边框是虚线还是虚线。
public class BorderedTextView extends TextView {
private Paint paint = new Paint();
public static final int BORDER_TOP = 0x00000001;
public static final int BORDER_RIGHT = 0x00000002;
public static final int BORDER_BOTTOM = 0x00000004;
public static final int BORDER_LEFT = 0x00000008;
private Border[] borders;
public BorderedTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public BorderedTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public BorderedTextView(Context context) {
super(context);
init();
}
private void init(){
paint.setStyle(Paint.Style.STROKE);
paint.setColor(Color.BLACK);
paint.setStrokeWidth(4);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if(borders == null) return;
for(Border border : borders){
paint.setColor(border.getColor());
paint.setStrokeWidth(border.getWidth());
if(border.getStyle() == BORDER_TOP){
canvas.drawLine(0, 0, getWidth(), 0, paint);
} else
if(border.getStyle() == BORDER_RIGHT){
canvas.drawLine(getWidth(), 0, getWidth(), getHeight(), paint);
} else
if(border.getStyle() == BORDER_BOTTOM){
canvas.drawLine(0, getHeight(), getWidth(), getHeight(), paint);
} else
if(border.getStyle() == BORDER_LEFT){
canvas.drawLine(0, 0, 0, getHeight(), paint);
}
}
}
public Border[] getBorders() {
return borders;
}
public void setBorders(Border[] borders) {
this.borders = borders;
}
}
边框类:
public class Border {
private int orientation;
private int width;
private int color = Color.BLACK;
private int style;
public int getWidth() {
return width;
}
public void setWidth(int width) {
this.width = width;
}
public int getColor() {
return color;
}
public void setColor(int color) {
this.color = color;
}
public int getStyle() {
return style;
}
public void setStyle(int style) {
this.style = style;
}
public int getOrientation() {
return orientation;
}
public void setOrientation(int orientation) {
this.orientation = orientation;
}
public Border(int Style) {
this.style = Style;
}
}
希望这对某人有所帮助:)
可以将可绘制的形状(矩形)设置为视图的背景。
<TextView android:text="Some text" android:background="@drawable/back"/>
和矩形drawable back.xml(放入res/drawable文件夹):
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<solid android:color="@android:color/white" />
<stroke android:width="1dip" android:color="#4fa5d5"/>
</shape>
您可以使用@android:color/transparent作为纯色,使其具有透明的背景。您还可以使用填充将文本与边框分开。有关详细信息,请参阅:http://developer.android.com/guide/topics/resources/drawable-resource.html
可以通过两种方法设置边框。一种是可绘制的,另一种是编程的。
使用Drawable
<shape>
<solid android:color="@color/txt_white"/>
<stroke android:width="1dip" android:color="@color/border_gray"/>
<corners android:bottomLeftRadius="10dp"
android:bottomRightRadius="0dp"
android:topLeftRadius="10dp"
android:topRightRadius="0dp"/>
<padding android:bottom="0dip"
android:left="0dip"
android:right="0dip"
android:top="0dip"/>
</shape>
程序化的
public static GradientDrawable backgroundWithoutBorder(int color) {
GradientDrawable gdDefault = new GradientDrawable();
gdDefault.setColor(color);
gdDefault.setCornerRadii(new float[] { radius, radius, 0, 0, 0, 0,
radius, radius });
return gdDefault;
}
我只是在寻找一个类似的答案——它可以通过Stroke和以下覆盖来完成:
@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
Paint strokePaint = new Paint();
strokePaint.setARGB(255, 0, 0, 0);
strokePaint.setTextAlign(Paint.Align.CENTER);
strokePaint.setTextSize(16);
strokePaint.setTypeface(Typeface.DEFAULT_BOLD);
strokePaint.setStyle(Paint.Style.STROKE);
strokePaint.setStrokeWidth(2);
Paint textPaint = new Paint();
textPaint.setARGB(255, 255, 255, 255);
textPaint.setTextAlign(Paint.Align.CENTER);
textPaint.setTextSize(16);
textPaint.setTypeface(Typeface.DEFAULT_BOLD);
canvas.drawText("Some Text", 100, 100, strokePaint);
canvas.drawText("Some Text", 100, 100, textPaint);
super.draw(canvas, mapView, shadow);
}
创建一个边框视图,背景颜色作为边框的颜色和文本视图的大小。将边框视图填充设置为边框的宽度。将文本视图背景色设置为文本视图所需的颜色。现在在边框视图中添加文本视图。
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