欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

截取手机屏幕成图片保存到sdcard卡当中 android截屏4.0截取图片 

程序员文章站 2024-03-18 19:08:04
...

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.os.Bundle;
import android.os.Environment;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;

public class PrintScreenDemoActivity extends Activity {
private Button mButton;
private LinearLayout mLayout;
private int mPrintNum;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LayoutInflater inf = this.getLayoutInflater();
mLayout = (LinearLayout)inf.inflate(R.layout.main, null);
setContentView(mLayout);
mButton = (Button)findViewById(R.id.print_btn);
mButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
GetandSaveCurrentImage();
mPrintNum++;
mButton.setText("截屏次数:"+mPrintNum);
}
});
}
private void GetandSaveCurrentImage() 

//1.构建Bitmap 
WindowManager windowManager = getWindowManager(); 
Display display = windowManager.getDefaultDisplay(); 
int w = display.getWidth(); 
int h = display.getHeight(); 

Bitmap Bmp = Bitmap.createBitmap( w, h, Config.ARGB_8888 ); 

//2.获取屏幕 
View decorview = this.getWindow().getDecorView(); 
decorview.setDrawingCacheEnabled(true); 
Bmp = decorview.getDrawingCache(); 
String SavePath = getSDCardPath()+"/PrintScreenDemo/ScreenImage";

//3.保存Bitmap 
try { 
File path = new File(SavePath); 
//文件 
String filepath = SavePath + "/Screen_"+mPrintNum+".png"; 
File file = new File(filepath); 
if(!path.exists()){ 
path.mkdirs(); 

if (!file.exists()) { 
file.createNewFile(); 


FileOutputStream fos = null; 
fos = new FileOutputStream(file); 
if (null != fos) { 
Bmp.compress(Bitmap.CompressFormat.PNG, 90, fos); 
fos.flush(); 
fos.close(); 

Toast.makeText(this, "截屏文件已保存至SDCard/PrintScreenDemo/ScreenImage/下", Toast.LENGTH_LONG).show(); 


} catch (Exception e) { 
e.printStackTrace(); 



/**
* 获取SDCard的目录路径功能
@return 
*/
private String getSDCardPath(){
File sdcardDir = null;
//判断SDCard是否存在
boolean sdcardExist = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);
if(sdcardExist){
sdcardDir = Environment.getExternalStorageDirectory();
}

return sdcardDir.toString();
}
}

布局文件:
< ?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" >

<Button
android:id="@+id/print_btn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="截屏" />

</LinearLayout>
由于是把截屏的图片存放到sd卡里,所以要在manifest.xml文件中增加对sd卡的写入权限.

 

转自:http://my.oschina.net/u/246578/blog/77263