安卓实现截屏以及录屏功能Demo

安卓实现截屏以及录屏功能Demo 安卓实现截屏以及录屏功能Demo

package com.dzjin.screen.screenshotandrecorddemo;import android.content.Context;import android.content.Intent;import android.graphics.Bitmap;import android.media.projection.MediaProjectionManager;import android.os.Environment;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.DisplayMetrics;import android.view.KeyEvent;import android.view.View;import android.widget.Button;import android.widget.LinearLayout;import android.widget.Toast;import java.io.FileOutputStream;import java.text.SimpleDateFormat;import java.util.Date;public class MainActivity extends AppCompatActivity { private LinearLayout linearLayout=null; private Button buttonRecord=null; private Button buttonCapture=null; private boolean isRecord=false; private int mScreenWidth; private int mScreenHeight; private int mScreenDensity; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); getScreenBaseInfo(); linearLayout=(LinearLayout)findViewById(R.id.linearLayout); buttonRecord=(Button)findViewById(R.id.buttonRecord); buttonCapture=(Button)findViewById(R.id.buttonCapture); buttonRecord.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(isRecord){ stopScreenRecord(); }else{ startScreenRecord(); } } }); buttonCapture.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { capture(linearLayout); } }); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(requestCode == 1000){ if(resultCode == RESULT_OK){ //获得录屏权限，启动Service进行录制 Intent intent=new Intent(MainActivity.this,ScreenRecordService.class); intent.putExtra("resultCode",resultCode); intent.putExtra("resultData",data); intent.putExtra("mScreenWidth",mScreenWidth); intent.putExtra("mScreenHeight",mScreenHeight); intent.putExtra("mScreenDensity",mScreenDensity); startService(intent); Toast.makeText(this,"录屏开始",Toast.LENGTH_SHORT).show(); }else{ Toast.makeText(this,"录屏失败",Toast.LENGTH_SHORT).show(); } } } //start screen record private void startScreenRecord(){ //Manages the retrieval of certain types of MediaProjection tokens. MediaProjectionManager mediaProjectionManager= (MediaProjectionManager)getSystemService(Context.MEDIA_PROJECTION_SERVICE); //Returns an Intent that must passed to startActivityForResult() in order to start screen capture. Intent permissionIntent=mediaProjectionManager.createScreenCaptureIntent(); startActivityForResult(permissionIntent,1000); isRecord=true; buttonRecord.setText(new String("停止录屏")); } //stop screen record. private void stopScreenRecord(){ Intent service = new Intent(this, ScreenRecordService.class); stopService(service); isRecord=false; buttonRecord.setText(new String("开始录屏")); Toast.makeText(this,"录屏成功",Toast.LENGTH_SHORT).show(); } public void capture(View v){ //格式化时间作为截屏文件名 SimpleDateFormat simpleDateFormat=new SimpleDateFormat("YY-MM-DD-HH-MM-SS"); //在获取外部存储的时候，一定注意添加权限，如果添加权限还不能成功，则手动在应用中开启权限。 String filePathName= Environment.getExternalStorageDirectory() "/" simpleDateFormat.format(new Date()) ".png"; //Find the topmost view in the current view hierarcht. View view=v.getRootView(); // Enable or disable drawing cache. view.setDrawingCacheEnabled(true); // Calling this method is equivalent to calling buildDrawingCache(false); // In order to force drawing cache to be buuild. view.buildDrawingCache(); //Calling this method is equivalent to calling getDrawingCache(false); //Return the Bitmap in which this view drawing is cached. Bitmap bitmap=view.getDrawingCache(); try{ System.out.println(filePathName); FileOutputStream fileOutputStream=new FileOutputStream(filePathName); //Write a compressed version of bitmap to specified outputStream. bitmap.compress(Bitmap.CompressFormat.PNG,100,fileOutputStream); Toast.makeText(this,"Cpature Succeed",Toast.LENGTH_SHORT).show(); }catch (Exception e){ e.printStackTrace(); Toast.makeText(this,"Cpature Failed",Toast.LENGTH_SHORT).show(); } } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { // 在这里将BACK键模拟了HOME键的返回桌面功能（并无必要） if (keyCode == KeyEvent.KEYCODE_BACK) { simulateHome(); return true; } return super.onKeyDown(keyCode, event); } /** * 获取屏幕基本信息 */ private void getScreenBaseInfo() { //A structure describing general information about a display, such as its size, density, and font scaling. DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics); mScreenWidth = metrics.widthPixels; mScreenHeight = metrics.heightPixels; mScreenDensity = metrics.densityDpi; } /** * 模拟HOME键返回桌面的功能 */ private void simulateHome() { //Intent.ACTION_MAIN,Activity Action: Start as a main entry point, does not expect to receive data. Intent intent = new Intent(Intent.ACTION_MAIN); //If set, this activity will become the start of a new task on this history stack. intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); //This is the home activity, that is the first activity that is displayed when the device boots. intent.addCategory(Intent.CATEGORY_HOME); this.startActivity(intent); }}