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BorderTextViews.java

package xiaosi.BorderTextView;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.widget.TextView;

public class BorderTextViews extends TextView
{
	private Paint paint = null;
	private int color = Color.GRAY;
	public BorderTextViews(Context context, AttributeSet attrs)
	{
		super(context, attrs);
	}
    //設置邊框顏色
	public void setPaintColor(int color){
		this.color = color;
	}
	@Override
	protected void onDraw(Canvas canvas)
	{
		super.onDraw(canvas);
		paint = new Paint();
		//給邊框設置顏色
		paint.setColor(color);
		//上
		canvas.drawLine(0, 0, this.getWidth()-1, 0, paint);
		//左
		canvas.drawLine(0, 0, 0, this.getHeight()-1, paint);
		//下
		canvas.drawLine(0, this.getHeight()-1, this.getWidth()-1, this.getHeight()-1, paint);
		//右
		canvas.drawLine(this.getWidth()-1, 0, this.getWidth()-1, this.getHeight()-1, paint);
	}
}

package xiaosi.BorderTextView;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;

public class BorderTextViewActivity extends Activity {
    /** Called when the activity is first created. */
	private BorderTextViews borderTextView = null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        borderTextView = (BorderTextViews)findViewById(R.id.Border);
        borderTextView.setPaintColor(Color.GRAY);
    }
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" 
    android:background="#CCFF66">

    <xiaosi.BorderTextView.BorderTextViews
        android:id="@+id/Border"
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"
		android:textColor="#C71585" 
		android:layout_marginTop="20dp"
		android:padding="10dp" 
		android:layout_gravity="center" 
		android:text="在畫布上畫邊框" />

</LinearLayout>

posted on 2012-02-23 17:05 mixer-a 閱讀(434) 評論(0) 編輯收藏

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