view 自定义标题+点击才开始的进度条+使用二维码

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activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:custom="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="vertical">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <com.day05.TitleView            android:id="@+id/titleview_id"            android:layout_width="match_parent"            android:layout_height="wrap_content"></com.day05.TitleView>    </LinearLayout>    <com.day05.JdtView        android:id="@+id/jdt_view"        android:layout_width="match_parent"        android:layout_height="300dp" />    <Button        android:id="@+id/sm"        android:layout_width="150dp"        android:layout_height="50dp"        android:layout_gravity="center_horizontal"        android:text="扫描二维码" /></LinearLayout>

activity_main2.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="60dp"        android:background="#D1EEEE"        android:orientation="horizontal">        <ImageButton            android:id="@+id/left_btn"            android:layout_width="50dp"            android:layout_height="wrap_content"            android:src="@drawable/left_title" />        <TextView            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_gravity="center_vertical"            android:layout_weight="1"            android:gravity="center"            android:text="那些花儿"            android:textSize="30dp" />        <ImageButton            android:id="@+id/right_btn"            android:layout_width="50dp"            android:layout_height="wrap_content"            android:src="@drawable/right_title" />    </LinearLayout>    <com.day05.TiXingView        android:layout_width="match_parent"        android:layout_height="wrap_content" /></LinearLayout>

title_layout.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="60dp"        android:background="#D1EEEE"        android:orientation="horizontal">        <ImageButton            android:id="@+id/left_btn"            android:layout_width="50dp"            android:layout_height="wrap_content"            android:src="@drawable/left_title" />        <TextView            android:layout_width="0dp"            android:layout_height="wrap_content"            android:layout_gravity="center_vertical"            android:layout_weight="1"            android:gravity="center"            android:text="那些花儿"            android:textSize="30dp" />        <ImageButton            android:id="@+id/right_btn"            android:layout_width="50dp"            android:layout_height="wrap_content"            android:src="@drawable/right_title" />    </LinearLayout></LinearLayout>

MainActivity.java

package com.day05;import android.app.Activity;import android.content.Intent;import android.os.Bundle;;import android.view.View;public class MainActivity extends Activity implements TitleView.LeftCallBack {    public TitleView titleView;    private JdtView jdtView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        jdtView = findViewById(R.id.jdt_view);        findViewById(R.id.sm).setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                jdtView.start();            }        });        titleView = (TitleView) findViewById(R.id.titleview_id);        titleView.setCallBack(this);    }    @Override    public void leftClick() {    }    @Override    public void rightClick() {        Intent intent = new Intent(MainActivity.this, MainActivity2.class);        startActivity(intent);    }}

MainActivity2.java

package com.day05;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.ImageButton;/** * Created by lenovo on 2017/11/04. */public class MainActivity2 extends Activity {    private ImageButton back;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);        back = findViewById(R.id.left_btn);        back.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                Intent intent = new Intent(MainActivity2.this, MainActivity.class);                startActivity(intent);            }        });    }}

TitleView.java

package com.day05;/** * Created by lenovo on 2017/11/04. */import android.content.Context;import android.support.annotation.Nullable;import android.util.AttributeSet;import android.view.LayoutInflater;import android.view.View;import android.widget.ImageButton;import android.widget.LinearLayout;public class TitleView extends LinearLayout {    public TitleView(Context context) {        this(context, null);    }    public TitleView(Context context, @Nullable AttributeSet attrs) {        this(context, attrs, 0);    }    public TitleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        // setContentView        View inflate = LayoutInflater.from(context).inflate(R.layout.title_layout, this);        ImageButton left = inflate.findViewById(R.id.left_btn);        ImageButton right = inflate.findViewById(R.id.right_btn);        left.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                callBack.leftClick();            }        });        right.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                callBack.rightClick();            }        });    }    public LeftCallBack callBack;    public void setCallBack(LeftCallBack callBack) {        this.callBack = callBack;    }    interface LeftCallBack {        public void leftClick();        public void rightClick();    }}

TiXingView.java

package com.day05;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.AttributeSet;import android.view.View;/** * Created by lenovo on 2017/11/04. */public class TiXingView extends View {    private Paint paint = new Paint();    public TiXingView(Context context) {        super(context);    }    public TiXingView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public TiXingView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        int x = getWidth();        int y = getHeight();        paint.setColor(Color.YELLOW);        canvas.drawRect(0, 0, x/3, 125, paint);        paint.setColor(Color.GREEN);        canvas.drawRect(x/3, 125, x/3*2, 250, paint);        paint.setColor(Color.YELLOW);        canvas.drawRect(x/3*2, 250, x, 375, paint);    }}

JdtView.java

package com.day05;import android.content.Context;import android.content.Intent;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Rect;import android.graphics.RectF;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.yzq.zxinglibrary.android.CaptureActivity;/** * Created by lenovo on 2017/11/04. */public class JdtView extends View {    private Paint paint = new Paint();    private boolean runing = true;    private int p = 0;    Context context;    public JdtView(Context context) {        super(context);    }    public JdtView(Context context, AttributeSet attrs) {        super(context, attrs);        this.context = context;        paint.setAntiAlias(true);//抗锯齿        paint.setStyle(Paint.Style.STROKE);//设置画笔 填充是空心的    }    public void start() {        new Thread(new Runnable() {            @Override            public void run() {                while (runing) {                    if (p >= 360) {                        runing = false;                        return;                    }                    System.out.println("p = " + p);                    p += 10;                    postInvalidate(); //子线程刷新 系统调用onDraw（） 方法                    try {                        Thread.sleep(100);                    } catch (InterruptedException e) {                        e.printStackTrace();                    }                }            }        }).start();    }    public JdtView(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        int x = getWidth() / 2;        int y = getHeight() / 2;        paint.setColor(Color.GRAY);//设置画笔的颜色        paint.setStrokeWidth(30);//设置画笔的粗细        canvas.drawCircle(x, y, 200, paint);        paint.setColor(Color.GREEN);//设置画笔的颜色        int radius = 200;//设置园的大小//定义一个区域        RectF rectF = new RectF(x - radius, y - radius, x + radius, y + radius);        //画弧//       useCentor  true 从中心点开始画 false 中心点不现实        canvas.drawArc(rectF, -0, p, false, paint);        int text = (int) ((float) p / 360 * 100);//        measureText  测量字符串的宽度        float textWidth = paint.measureText(text + "%");        Rect rextText = new Rect();//        rextText.height() 获取字符串的高度        paint.getTextBounds(text + "%", 0, (text + "%").length(), rextText);        paint.setTextSize(30);        paint.setStrokeWidth(1);        //画文字        canvas.drawText(text + "%", x - textWidth / 2, y + rextText.height() / 2, paint);        if (p == 360) {            Intent intent = new Intent(context, CaptureActivity.class);            context.startActivity(intent);        }    }}

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="panjiangang.bwie.com.day05">    <uses-permission android:name="android.permission.FLASHLIGHT" />    <uses-feature android:name="android.hardware.camera" />    <uses-feature android:name="android.hardware.camera.autofocus" />    <uses-permission android:name="android.permission.VIBRATE" />    <uses-permission android:name="android.permission.WAKE_LOCK" />    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.INTERNET" />    <!--Manifest.permission.CAMERA-->    <!--Manifest.permission.READ_EXTERNAL_STORAGE-->    <uses-permission android:name="android.permission.CAMERA"/>    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".MainActivity2"></activity>    </application></manifest>

apply plugin: 'com.android.application'android {    compileSdkVersion 26    buildToolsVersion "26.0.1"    defaultConfig {        applicationId "com.day05"        minSdkVersion 16        targetSdkVersion 26        versionCode 1        versionName "1.0"        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {        exclude group: 'com.android.support', module: 'support-annotations'    })    compile 'com.android.support:appcompat-v7:26.0.0-alpha1'    testCompile 'junit:junit:4.12'    /*添加依赖*/    compile 'com.github.yuzhiqiang1993:zxing:2.0.0'}

/////////////////////////////////////////////////////////////
// Top-level build file where you can add configuration options common to all sub-projects/modules.buildscript {    repositories {        jcenter()    }    dependencies {        classpath 'com.android.tools.build:gradle:2.2.2'        // NOTE: Do not place your application dependencies here; they belong        // in the individual module build.gradle files    }}allprojects {    repositories {        jcenter()        maven { url 'https://jitpack.io' }    }}task clean(type: Delete) {    delete rootProject.buildDir}

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