我在包含 TextView 的 XML 中创建了一个 RelativeLayout，如下所示:
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView3"
android:layout_below="@+id/button1"
android:layout_marginTop="28dp"
android:background="@drawable/rounded_edges"
android:textSize="25sp" />
这样一个圆圈将在文本下方绘制。 rounded_edges.xml 定义如下:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<corners android:radius="10dip"/>
<stroke android:color="#c00000" android:width="2dip"/>
<solid android:color="#ffffff"/>
</shape>
然后我需要更多的 textView，具体取决于用户输入的数字。每个 textView 都会显示一个数字，下面有一个圆圈。我成功地在 Java 代码中以编程方式创建了 textViews，如下所示，圆圈除外:
final TextView textView5 = (TextView) findViewById(R.id.textView5);
// size stores the number entered by user
RelativeLayout myLayout = (RelativeLayout)findViewById(R.id.layout1);
// Creating a new TextView
TextView[] tv = new TextView[size+1];
TextView temptv;
for (i = 1; i <= size; i++) {
temptv = new TextView(MainActivity.this);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
if (i > 1) {
lp.addRule(RelativeLayout.BELOW, R.id.textView5);
lp.addRule(RelativeLayout.RIGHT_OF, tv[i-1].getId());
}
else {
lp.addRule(RelativeLayout.BELOW, R.id.textView5);
lp.addRule(RelativeLayout.ALIGN_LEFT, R.id.textView5);
}
// width of Text
temptv.setWidth(50);
// size of Text
temptv.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25);
temptv.setLayoutParams(lp);
myLayout.addView(temptv, lp);
answer = "<font color='#8000ff'>" + mynum[i] + "</font>";
answer = answer + " ";
// Update the label with our dynamic answer
temptv.setText(Html.fromHtml(answer));
tv[i] = temptv;
tv[i].setId(i);
}
setContentView(myLayout);
有没有办法将 android:background="@drawable/rounded_edges" 转换为 Java 代码，这样我仍然可以使用 rounded_edges.xml 来绘制圆圈？还是我必须用 Java 从头开始绘制它？
您可以将 textView 背景设置为 txt.setBackgroundResources();
或者试试这个
这不是您正在寻找的确切内容，但我可以说它会帮助您找到解决方案。
private int xCord, yCord ;
private final Paint dotPaint = new Paint();
private void init()
{
dotPaint.setAntiAlias(true);
dotPaint.setStyle(Paint.Style.FILL);
dotPaint.setColor(Color.parseColor("#FFAC4A70"));// Change color as per Ur...
}
private static final int DOT_RADIUS = 16;//change it as per requirement
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if(isEventCell)
{
xCord = getWidth() / 2;
yCord = getHeight() - DOT_RADIUS - 8;
canvas.drawCircle(xCord , yCord,DOT_RADIUS , dotPaint);
}
}
然后尝试调用 init();在你的 textVies 所在的方法构造函数中....
public class CalendarCellView extends TextView {
private final Paint dotPaint = new Paint();
private boolean isEventCell ;
private int xCord, yCord ;
private static final int DOT_RADIUS = 16;
private static final int[] STATE_SELECTABLE = {
R.attr.state_selectable
};
private static final int[] STATE_CURRENT_MONTH = {
R.attr.state_current_month
};
private static final int[] STATE_TODAY = {
R.attr.state_today
};
private static final int[] STATE_RANGE_FIRST = {
R.attr.state_range_first
};
private static final int[] STATE_RANGE_MIDDLE = {
R.attr.state_range_middle
};
private static final int[] STATE_RANGE_LAST = {
R.attr.state_range_last
};
private boolean isSelectable = false;
private boolean isCurrentMonth = false;
private boolean isToday = false;
private RangeState rangeState = RangeState.NONE;
public CalendarCellView(Context context) {
super(context);
init();
}
public CalendarCellView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public CalendarCellView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
public void setSelectable(boolean isSelectable) {
this.isSelectable = isSelectable;
refreshDrawableState();
}
private void init()
{
dotPaint.setAntiAlias(true);
dotPaint.setStyle(Paint.Style.FILL);
dotPaint.setColor(Color.parseColor("#FFAC4A70"));//("#FFAC4A70"));
}
public void setCurrentMonth(boolean isCurrentMonth) {
this.isCurrentMonth = isCurrentMonth;
refreshDrawableState();
}
public void setToday(boolean isToday) {
this.isToday = isToday;
refreshDrawableState();
}
public void setRangeState(MonthCellDescriptor.RangeState rangeState) {
this.rangeState = rangeState;
refreshDrawableState();
}
public void isEventCell(boolean isEventCell)
{
this.isEventCell = isEventCell;
}
@Override protected int[] onCreateDrawableState(int extraSpace) {
final int[] drawableState = super.onCreateDrawableState(extraSpace + 4);
if (isSelectable) {
mergeDrawableStates(drawableState, STATE_SELECTABLE);
}
if (isCurrentMonth) {
mergeDrawableStates(drawableState, STATE_CURRENT_MONTH);
}
if (isToday) {
mergeDrawableStates(drawableState, STATE_TODAY);
}
if (rangeState == MonthCellDescriptor.RangeState.FIRST) {
mergeDrawableStates(drawableState, STATE_RANGE_FIRST);
} else if (rangeState == MonthCellDescriptor.RangeState.MIDDLE) {
mergeDrawableStates(drawableState, STATE_RANGE_MIDDLE);
} else if (rangeState == RangeState.LAST) {
mergeDrawableStates(drawableState, STATE_RANGE_LAST);
}
return drawableState;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
if(isEventCell)
{
xCord = getWidth() / 2;
yCord = getHeight() - DOT_RADIUS - 8;
canvas.drawCircle(xCord , yCord,DOT_RADIUS , dotPaint);
}
}
}