java - 如何在FinishInflate 上向该 View 添加 toast

Question

我是 Android 新手，我想知道是否可以在 FinishInflate 上添加 toast。如果这是一个愚蠢的问题，请原谅我。我创建了一个这样的 View 。

    import android.content.Context;
        import android.graphics.Canvas;
        import android.graphics.Color;
        import android.graphics.Paint;
        import android.graphics.Rect;
        import android.view.View;
        import android.widget.Toast;

public class CustomView extends View {

    private Rect rectangle;
    private Paint paint;

    public CustomView(Context context) {
        super(context);
        int x = 50;
        int y = 50;
        int sideLength = 200;

        // create a rectangle that we'll draw later
        rectangle = new Rect(x, y, sideLength, sideLength);

        // create the Paint and set its color
        paint = new Paint();
        paint.setColor(Color.GRAY);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        canvas.drawColor(Color.BLUE);
        canvas.drawRect(rectangle, paint);
    }
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        Toast.makeText(getApplicationContext(),"onfinishinflate",Toast.LENGTH_SHORT).show();
    }

}

Answer 1

更新

View有它自己的方法，称为getContext()，所以你可以像这样使用

Toast.makeText(getContext(), "onfinishinflate", Toast.LENGTH_SHORT).show();

Reference

<小时/>

private Context context;

public CustomView(Context context) {
    super(context);
    this.context = context;

// Rest of ur codes
}

@Override
protected void onFinishInflate() {
    super.onFinishInflate();
    Toast.makeText(context, "onfinishinflate", Toast.LENGTH_SHORT).show();
}

使用构造函数在类中设置上下文，并将其用于 Toast 目的