实例介绍
【实例简介】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
【实例截图】
【核心代码】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | 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); }} |
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