Android实现截取当前屏幕图片并保存至SDCard

功能

1. 实现截取当前屏幕的功能。

2. 把截取的图片保存到SDCard中的某个目录文件夹下面。

 

Java代码

 

package com.app.test01;

import java.io.File;
import java.io.FileOutputStream;

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.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.Toast;

public class JieTu extends Activity {
    private Button btnButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.jietu);
        btnButton = (Button) findViewById(R.id.button1);
        btnButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                GetandSaveCurrentImage();
            }
        });
    }

    /**
     * 获取和保存当前屏幕的截图
     */
    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() + "/AndyDemo/ScreenImage";
        // 3.保存Bitmap
        try {
            File path = new File(SavePath);
            // 文件
            String filepath = SavePath + "/Screen_1.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/AndyDemo/ScreenImage/下",
                        Toast.LENGTH_LONG).show();
            }

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

    /**
     * 获取SDCard的目录路径功能
     */
    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();
    }
}

 

添加读写权限

由于要对SDCard进行操作，所以别忘记了在manifest.xml文件中赋以对SDCard的读写权限：

 

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

 

 

 

【参考】http://www.jb51.net/article/40446.htm