取得手机屏幕大小

package com.kevin.displaymetrics;import android.app.Activity;import android.os.Bundle;import android.util.DisplayMetrics;import android.widget.TextView;public class Main extends Activity {private TextView textView;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        // 创—isplayMetrics对象        DisplayMetrics dm = new DisplayMetrics();        /*         * 在调用getWindowManager之后，会取得现有Activity的Handler，此时         * 调用getDefaultDisplay方法将取得的宽高存放于dm中（取得的宽高是         * 以像素单位，此处像素是"绝对像素"）         */        this.getWindowManager().getDefaultDisplay().getMetrics(dm);        String result = "手机屏幕分辨率为: " + dm.widthPixels + " * " +                        dm.heightPixels;        textView = (TextView) findViewById(R.id.tv_result);        textView.setText(result);    }}