Sample android custom control and custom callback function steps

  • 2020-05-24 06:05:43
  • OfStack

Steps for custom controls:

How the 1 View works
2. Write the View class
Add attributes to the View class
4 draw the screen
Respond to user messages
6. Custom callback function

java code


private class MyText extends LinearLayout {
    private TextView text1;
    /*
     * private String text;
     * 
     * public String getText() { return text; }
     * 
     * public void setText(String text) { this.text = text; }
     */
    public MyText(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
        LayoutInflater inflate = (LayoutInflater) context
                .getSystemService(context.LAYOUT_INFLATER_SERVICE);
        View view = inflate.inflate(R.layout.tabhost_item, this, true);
        text1 = (TextView) view.findViewById(R.id.tabhost_tv);
    }
    public void setTextViewText(String tabhost_name) {
        text1.setText(tabhost_name);
    }
    /*
     * @Override protected void onDraw(Canvas canvas) { // TODO
     * Auto-generated method stub super.onDraw(canvas); Paint p = new
     * Paint(); p.setColor(Color.WHITE); p.setTextSize(10);
     * canvas.drawText(text, 25, 25, p); }
     */
}

xml code


<?xml version="1.0" encoding="utf-8"?>
<!-- GMapTabActivity Custom control in MyText Since the layout  -->
<TextView
    android:id="@+id/tabhost_tv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
     />


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