本文主要解决获取手机屏幕的大小：例子很简单，主要通过 DisplayMetrics 类来获取相关的信息,代码如下

效果图：

XML文件

1.   activity_main.xml

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

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context="com.example.displaymetricsdemo.MainActivity$PlaceholderFragment" >

android:id="@+id/display_metrics_tv"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentTop="true"

android:text="@string/display_metrics"

/>

android:id="@+id/metrics_btn"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_below="@id/display_metrics_tv"

android:text="@string/metrics"

/>

2.strings.xml

DisplayMetricsDemo

显示屏幕分辨率:

Settings

获取屏幕分辨率

3.MainActivity.java

private TextView displayMetricsTv;

private Button metricsBtn;

private DisplayMetrics displayMetrics;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

displayMetricsTv = (TextView) this.findViewById(R.id.display_metrics_tv);

metricsBtn = (Button) this.findViewById(R.id.metrics_btn);

metricsBtn.setOnClickListener(new OnClickListener(){

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

displayMetrics = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);

displayMetricsTv.setText("显示屏幕分辨率:\r\n" + displayMetrics.widthPixels + " * " + displayMetrics.heightPixels);

}

});

}