surfaceview

@[toc] surfaceview

activity

package com.example.day10_cinema_exe;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.VideoView;

import java.net.URI;

public class MainActivity extends AppCompatActivity {

    private Button call;
    private Button videos;
    private Button photos;
    private Button picKu;
    private Button liulan;
    private Button jietu;
    private VideoView videoView;
    private ImageView imv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.READ_EXTERNAL_STORAGE,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
                    Manifest.permission.CALL_PHONE,
                    Manifest.permission.CAMERA
            }, 120);
        }
        initView();
    }

    private void initView() {
        call = (Button) findViewById(R.id.call);
        videos = (Button) findViewById(R.id.videos);
        photos = (Button) findViewById(R.id.photos);
        picKu = (Button) findViewById(R.id.pic_ku);
        liulan = (Button) findViewById(R.id.liulan);
        jietu = (Button) findViewById(R.id.jietu);
        videoView = (VideoView) findViewById(R.id.video_view);
        imv = (ImageView) findViewById(R.id.imv);


        //打电话
        call.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_CALL);
                intent.setData(Uri.parse("tel:" + "1861136050"));
                startActivity(intent);
            }
        });

        //打开浏览器
        liulan.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_VIEW);
                intent.setData(Uri.parse("https://www.iconfont.cn/home/index?spm=a313x.7781069.1998910419.2"));
                startActivity(intent);
            }
        });
        //录像

        videos.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
                startActivityForResult(intent, 101);
            }
        });


    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 101 && resultCode == Activity.RESULT_OK) {
            Uri data1 = data.getData();
            videoView.setVideoURI(data1);
            videoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mp) {
                    videoView.start();
                }
            });
        } else if (requestCode == 102 && resultCode == Activity.RESULT_OK) {
            Uri data1 = data.getData();
            imv.setImageURI(data1);
        }
    }
}


package com.example.day1112_homework;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback {
    private SurfaceView surfaceView;
    private SurfaceHolder surfaceHolder;
    private float x;
    private float y = 100;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();

        surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(this);
        x = getWindowManager().getDefaultDisplay().getWidth();


    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        new DanMuThread().start();


    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {

    }

    private void initView() {
        surfaceView = (SurfaceView) findViewById(R.id.ss);
    }

    class DanMuThread extends Thread {

        @Override
        public void run() {
            super.run();
            Paint paint = new Paint();
            paint.setColor(Color.RED);
            paint.setStrokeWidth(2);
            paint.setStyle(Paint.Style.FILL);
            paint.setTextSize(30);
            paint.setAntiAlias(true);

            while (true) {
                try {
                    Thread.sleep(10);
                    Canvas canvas = surfaceHolder.lockCanvas();

                    if (canvas == null) {
                        break;
                    }
                    canvas.drawColor(Color.WHITE);
                    canvas.drawText("来啊，快活啊！", x-=10, y, paint);

                    surfaceHolder.unlockCanvasAndPost(canvas);

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

        }
    }
}