SlidingMenu 和 SurfaceView画板的简单介绍和简单应用

最新推荐文章于 2020-04-28 08:07:41 发布

原创最新推荐文章于 2020-04-28 08:07:41 发布 · 253 阅读

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#Android

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SlidingMenu 和 SurfaceView

- SlidingMenu
- SurfaceView

SlidingMenu

使用前进行导包
可以代替Toolbar

在这里插入图片描述

package com.example.day03;

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.jeremyfeinstein.slidingmenu.lib.SlidingMenu;

public class MainActivity extends AppCompatActivity {
    SlidingMenu slidingMenu;
    Button button;
    Button button1;
    Fragment fragment;

    OneFragment oneFragment;
    TwoFragment twoFragment;
    int index;


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

        intomenu();

    }




    private void intomenu() {

        slidingMenu = new SlidingMenu(this);
        slidingMenu.setMode(SlidingMenu.LEFT);//设置slidingmenu从那边拉出
        slidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);//设置slidingmenu是从那边进行拖拉 是最左边还是全屏幕
        slidingMenu.setBehindOffset(400);//设置剩余的屏幕
        slidingMenu.attachToActivity(this, SlidingMenu.SLIDING_CONTENT);//绑定到指定的Contenxt

        slidingMenu.setMenu(R.layout.sim);//设置抽屉布局

        slidingMenu.setOnOpenListener(new SlidingMenu.OnOpenListener() {
            @Override
            public void onOpen() {
                Toast.makeText(MainActivity.this, "抽屉被打开", Toast.LENGTH_SHORT).show();
            }
        });
        slidingMenu.setOnClosedListener(new SlidingMenu.OnClosedListener() {
            @Override
            public void onClosed() {
                Toast.makeText(MainActivity.this, "抽屉被关闭", Toast.LENGTH_SHORT).show();
            }
        });

        button = slidingMenu.getMenu().findViewById(R.id.btn1);
        button1 = slidingMenu.getMenu().findViewById(R.id.btn2);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dianji(button);
            }
        });
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dianji(button1);
            }
        });


    }

    public void dianji(View view) {
        switch (view.getId()){
            case R.id.btn1:
                index=0;
                switchfragment(index);
                break;

            case R.id.btn2:
                index=1;
                switchfragment(index);
                break;

                default:
                    break;

        }
    }

    private void switchfragment(int index) {
        oneFragment=new OneFragment();
        twoFragment=new TwoFragment();
        FragmentManager supportFragmentManager = getSupportFragmentManager();
        FragmentTransaction fragmentTransaction = supportFragmentManager.beginTransaction();

        if(fragment!=null){
            fragmentTransaction.hide(fragment);
        }
        switch (index){
            case 0:
                fragment=oneFragment;
                fragmentTransaction.add(R.id.fr,fragment);
                break;

            case 1:
                fragment=twoFragment;
                fragmentTransaction.add(R.id.fr,fragment);
                break;
        }
        fragmentTransaction.commit();
    }
}

package com.example.day03;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class OneFragment extends Fragment {


    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view=inflater.inflate(R.layout.one,container,false);
        return view;
    }
}

package com.example.day03;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class TwoFragment extends Fragment {


    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view=inflater.inflate(R.layout.two,container,false);
        return view;
    }
}

SurfaceView

步骤1:自定义继承surfaceview，并实现SurfaceHolder.Callback
步骤2:重写4个构造方法
步骤3:重写SurfaceHolder.Callback回调3个生命周期方法
步骤4:在第个构造方法中初始化holder并addCallback(this);
步骤5:在SurfaceView的创建生命周期方法中开启线程更新U

在这里插入图片描述

package com.example.day04;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity implements View.OnTouchListener, SurfaceHolder.Callback, View.OnClickListener {

    private SurfaceView surfaceView;
    private Canvas canvas;//画布 用来画东西
    private Paint paint = new Paint();//画笔
    private SurfaceHolder surfaceHolder;//surfaceview的拥有者
    private Path path1 = new Path();
    private boolean is = true;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        surfaceView = findViewById(R.id.surfaceview);
        surfaceHolder = surfaceView.getHolder();
        findViewById(R.id.btn).setOnClickListener(this);

        surfaceHolder.addCallback(this);
        /**
         * 初始化画笔
         */
        paint.setColor(Color.BLACK);
        paint.setAntiAlias(true);//去锯齿
        //实心 Fill
        //STROKE不实心
        paint.setStyle(Paint.Style.STROKE);

        paint.setStrokeWidth(2);//2个像素
        surfaceView.setOnTouchListener(this);


    }

    /**
     * surfaceview被创建出来了
     *
     * @param holder
     */
    @Override
    public void surfaceCreated(SurfaceHolder holder) {

    //    new DrawZiDingYi().start();
       new MyThread().start();//当surfaceview创建好后，启动子线程去画一条线
    }

    /**
     * surfaceview改变了
     *
     * @param holder
     * @param format
     * @param width
     * @param height
     */
    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    /**
     * surfaceview销毁了
     *
     * @param holder
     */

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        is = false;
    }

    /**
     * 触摸事件 event里面含有x，y坐标
     *
     * @param v
     * @param event 三种类型的事件   按下 移动 抬起
     * @return
     */
    @Override
    public boolean onTouch(View v, MotionEvent event) {

        int x = (int) event.getX();
        int y = (int) event.getY();
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN://按下事件
                path1.moveTo(x, y);
                break;
            case MotionEvent.ACTION_MOVE://移动事件
                path1.lineTo(x, y);
                break;
            case MotionEvent.ACTION_UP://抬起事件
                break;
        }
        return true;
    }


    @Override
    public void onClick(View v) {
        path1.reset();
    }


    class DrawZiDingYi extends Thread {
        @Override
        public void run() {
            super.run();
            while (is) {
                canvas = surfaceHolder.lockCanvas();
                canvas.drawColor(Color.WHITE);
                canvas.drawPath(path1, paint);
                surfaceHolder.unlockCanvasAndPost(canvas);
                try {
                    Thread.sleep(50);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

        }
    }

    class MyThread extends Thread {

        @Override
        public void run() {
            super.run();

            canvas = surfaceHolder.lockCanvas();//让该线程占有画布
            canvas.drawLine(100, 200, 500, 500, paint);
            //圆心坐标500,500 半径200
            canvas.drawCircle(500, 500, 200, paint);
            //画板颜色
            canvas.drawARGB(800, 800, 700, 700);
            //画矩形
            canvas.drawRect(300, 600, 200, 400, paint);

            //画多边形
            Path path = new Path();
            //起点左边
            path.moveTo(100, 800);
            path.lineTo(300, 1000);
            path.lineTo(100, 1200);
            path.lineTo(200, 600);
            path.lineTo(700, 800);
            path.close();//起点和终点
            canvas.drawPath(path, paint);
            //画扇形
            RectF rectF = new RectF(700, 400, 1000, 700);
            canvas.drawArc(rectF, -90, 50, true, paint);

            surfaceHolder.unlockCanvasAndPost(canvas);


        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
    <Button
        android:text="清空画板"
        android:onClick="dianji"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/btn"
        />
    <SurfaceView
        android:layout_below="@id/btn"
        android:id="@+id/surfaceview"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>