android开发中通过View的getDrawingCache方法可以达到截屏的目的,只是缺少状态栏!
原始界面
截屏得到的图片
代码实现
1. 添加权限(AndroidManifest.xml文件里)
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
2. 添加1个Button(activity_main.xml文件)
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:text="@string/hello_world" /> <Button android:id="@+id/btn_save" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Screenshot" /> </RelativeLayout>
3. 实现截屏(MainActivity.java文件)
package com.example.androidtest; import java.io.File; import java.io.FileOutputStream; import android.os.Bundle; import android.os.Environment; import android.app.Activity; import android.graphics.Bitmap; import android.view.Menu; import android.view.View; import android.widget.Button; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button btn = (Button) this.findViewById(R.id.btn_save); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { screenshot(); } }); } private void screenshot() { // 获取屏幕 View dView = getWindow().getDecorView(); dView.setDrawingCacheEnabled(true); dView.buildDrawingCache(); Bitmap bmp = dView.getDrawingCache(); if (bmp != null) { try { // 获取内置SD卡路径 String sdCardPath = Environment.getExternalStorageDirectory().getPath(); // 图片文件路径 String filePath = sdCardPath + File.separator + "screenshot.png"; File file = new File(filePath); FileOutputStream os = new FileOutputStream(file); bmp.compress(Bitmap.CompressFormat.PNG, 100, os); os.flush(); os.close(); } catch (Exception e) { } } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } }
时间: 2024-09-30 04:43:08