【Android】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