android 获得屏幕分辨率,Android获得屏幕分辨率的两种方法

package com.wufen.allapp;

import android.os.Bundle;

import android.app.Activity;

import android.content.Intent;

import android.content.pm.PackageManager;

import android.content.pm.ResolveInfo;

import android.util.DisplayMetrics;

import android.view.Display;

import android.view.Menu;

import android.view.WindowManager;

import android.widget.TextView;

import java.util.List;

public class MainActivity extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final PackageManager packageManager = this.getPackageManager();

final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);

mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);

// mainIntent.setPackage(packageName);

final List apps = packageManager.queryIntentActivities(mainIntent, 0);

// 方法1 Android获得屏幕的宽和高

WindowManager windowManager = getWindowManager();

Display display = windowManager.getDefaultDisplay();

int screenWidth = screenWidth = display.getWidth();

int screenHeight = screenHeight = display.getHeight();

// 方法2

DisplayMetrics dm = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(dm);

TextView tv = (TextView)this.findViewById(R.id.tv);

float width=dm.widthPixels*dm.density;

float height=dm.heightPixels*dm.density;

tv.setText("First method:"+dm.toString()+"\n"+"Second method:"+"Y="+screenWidth+";X="+screenHeight);

//dm.widthPixels,dm.heightPixels

}

}