TextView于getCompoundDrawables()使用演示样本的方法

MainActivity例如下列:

package cc.testcompounddrawables;

import android.app.Activity;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.widget.TextView;

/**

 * Demo描写叙述:

 * 測试getCompoundDrawables()方法.

 * Returns drawables for the left, top, right, and bottom borders.

 * 该方法返回包括控件左,上,右,下四个位置的Drawable的数组

 */

public class MainActivity extends Activity {

    private TextView mTextView;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.main);

		init();

	}

    private void init(){

    	mTextView=(TextView) findViewById(R.id.textView);

    	Drawable [] drawables=mTextView.getCompoundDrawables();

    	for (int i = 0; i < drawables.length; i++) {

    		Drawable drawable=drawables[i];

    		System.out.println("第"+i+"张图片 width="+drawable.getBounds().width()+

    				           ",height="+drawable.getBounds().height());

		}

    }

}

main.xml例如以下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent" >

    <TextView

        android:id="@+id/textView"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:drawableBottom="@drawable/ic_launcher"

        android:drawableLeft="@drawable/ic_launcher"

        android:drawableRight="@drawable/ic_launcher"

        android:drawableTop="@drawable/ic_launcher"

        android:text="測试getCompoundDrawables()方法"

        android:gravity="center"

        android:layout_centerInParent="true"

    />

</RelativeLayout>