进度条加载完成后跳转到扫描二维码页面

说明

在点击右侧的回调方法中跳转到图二所示页面，图二的页面标题栏显示上一个页面组合View的视图，通过自定义ViewGroup的方式实现梯形布局

点击扫描二维码按钮之后，进度条开始以每秒10%的进度进行，当进度条走到100%后，跳转到图三的扫描二维码页面，实现扫描二维码的功能






导入zxing依赖

compile 'cn.yipianfengye.android:zxing-library:2.2'






效果图












activity_main布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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:orientation="vertical"
android:layout_height="match_parent" tools:context="com.samsung.zhoukaomoni.MainActivity">
<com.samsung.zhoukaomoni.TitleLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
/>

<com.samsung.zhoukaomoni.ProgressView
android:layout_width="100dp"
android:layout_height="100dp"
android:id="@+id/circleView"
android:layout_gravity="center"
android:layout_marginTop="30dp"
/>

<Button
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="扫描二维码"
android:id="@+id/btn_sm"
android:layout_marginTop="30dp"
android:onClick="start"
/>

</LinearLayout>

activity_trapezoid布局

<?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"
>
<com.samsung.zhoukaomoni.TitleLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/colorAccent"
></com.samsung.zhoukaomoni.TitleLayout>
<com.samsung.zhoukaomoni.MyViewGroup
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="127dp"
android:layout_height="50dp"
android:background="#619ea0" />
<TextView
android:layout_width="127dp"
android:layout_height="50dp"
android:background="#7561a0"/>
<TextView
android:layout_width="127dp"
android:layout_height="50dp"
android:background="#9fa061" />
</com.samsung.zhoukaomoni.MyViewGroup>

</LinearLayout>

custom_layout布局

<?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"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:src="@drawable/topbar_up"
android:id="@+id/img"
android:layout_weight="1"

/>
<TextView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:id="@+id/tv"
android:text="那些花儿"
android:layout_weight="2"
android:gravity="center"
/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="50dp"
android:src="@mipmap/ic_launcher_round"
android:layout_weight="1"
android:id="@+id/img2"
/>
</LinearLayout>

manifests权限AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.samsung.zhoukaomoni">
<uses-permission android:name="android.permission.CAMERA" />
<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" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name="com.samsung.zhoukaomoni.MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.samsung.zhoukaomoni.Trapezoid"></activity>
</application>

</manifest>

主包下MainActivity类

public class MainActivity extends AppCompatActivity{
private Button btn_tiao;
private Button btn_sm;
int REQUEST_CODE=1;
private ProgressView circleView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getSupportActionBar().hide();
ZXingLibrary.initDisplayOpinion(this);
circleView = (ProgressView) findViewById(R.id.circleView);
btn_sm =(Button) findViewById(R.id.btn_sm);
//      btn_tiao= (Button) findViewById(R.id.btn_tiao);
//         btn_tiao.setOnClickListener(new View.OnClickListener() {
//             @Override
//             public void onClick(View view) {
//                 Intent in =new Intent(MainActivity.this,Trapezoid.class);
//                 startActivity(in);
//             }
//         });
}
int progress = 0;
public void start(View v) {
circleView.setMax(100);
progress=0;
new Thread() {
public void run() {
while (true) {
progress = progress + 1;
String text = progress + "%";
circleView.setProgressAndText(progress, text);
try {
sleep(30);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (progress == 100) {
Intent intent = new Intent(MainActivity.this, CaptureActivity.class);
startActivityForResult(intent, REQUEST_CODE);
break;
}
}
};
}.start();
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE) {
//处理扫描结果（在界面上显示）
if (null != data) {
Bundle bundle = data.getExtras();
if (bundle == null) {
return;
}
if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_SUCCESS) {
String result = bundle.getString(CodeUtils.RESULT_STRING);
Toast.makeText(this, "解析结果:" + result, Toast.LENGTH_LONG).show();
} else if (bundle.getInt(CodeUtils.RESULT_TYPE) == CodeUtils.RESULT_FAILED) {
Toast.makeText(MainActivity.this, "解析二维码失败", Toast.LENGTH_LONG).show();
}
}
}
}

}
主包下MyViewGroup类
 

public class MyViewGroup extends ViewGroup {
public MyViewGroup(Context context) {
super(context);
}

public MyViewGroup(Context context, AttributeSet attrs) {
super(context, attrs);
}

public MyViewGroup(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
measureChildren(widthMeasureSpec,heightMeasureSpec);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int count = getChildCount();
int startWidth = 0;
int startHeight = 0;
for (int i=0; i<count; i++){
View v = getChildAt(i);
v.layout(startWidth,startHeight,startWidth+v.getMeasuredWidth(),startHeight+v.getMeasuredHeight());
startWidth += v.getMeasuredWidth();
startHeight += v.getMeasuredHeight();
}
}
}

主包下ProgressView类

public class ProgressView extends View {
int progress = 0;
private String text="0%";
private int max = 100;

public ProgressView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}

public ProgressView(Context context, AttributeSet attrs) {
super(context, attrs);
}

public ProgressView(Context context) {
super(context);
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// 对于画笔
Paint paint = new Paint();
// 设置抗锯齿
paint.setAntiAlias(true);
// 设置画笔颜色

// 三种样式--Stroke 只要描边 Fill 填充 FILL_AND_STROKE和既有描边又有填充
paint.setStyle(Style.STROKE);
//设置描边宽度
paint.setStrokeWidth(2);
//定义外圈员的颜色
paint.setColor(Color.RED);
//绘制圆形进度条--获取当前控件多大，正好让进度条在这个控件区间内
canvas.drawCircle(getMeasuredWidth()/2, getMeasuredWidth()/2, getMeasuredWidth()/2, paint);
//重新设置描边宽度，这个宽度最好能完全盖过圆形
paint.setStrokeWidth(3);

//定义限制圆弧的矩形，当前这样定义正好让圆弧和圆重合
RectF oval = new RectF(0, 0, getMeasuredWidth(), getMeasuredWidth());
//设置进度条（圆弧的颜色）
paint.setColor(Color.GREEN);
//绘制，设置进度条的度数从0开始，结束值是个变量，可以自己自由设置，来设置进度
//true和false 代表是否使用中心点，如果true，代表连接中心点，会出现扇形的效果
canvas.drawArc(oval, 0, 360 * progress / max, false, paint);
//文字的绘制
paint.setTextSize(40);
//设置文字宽度
paint.setStrokeWidth(1.0f);
//测量文字大小-提前准备个矩形
Rect bounds = new Rect();
//测量文字的宽和高，测量的值可以根据矩形获取
paint.getTextBounds(text, 0, text.length(), bounds);
paint.setColor(Color.BLACK);
paint.setStyle(Style.FILL);
//绘制文字，计算文字的宽高进行设置
canvas.drawText(text, getMeasuredWidth()/2 - bounds.width() / 2,
getMeasuredWidth()/2 + bounds.height() / 2, paint);

}
/**
* 初始设置当前进度的最大值-默认100
* @param max
*/
public void setMax(int max) {
this.max = max;
}
/**
* 更新进度和文字
* @param progress
* @param text
*/
public void setProgressAndText(int progress, String text) {
this.progress = progress;
this.text = text;
//重新绘制
postInvalidate();
}

}

主包下TitleLayout类

public class TitleLayout extends LinearLayout {
private ImageView img;
private TextView tv;
private ImageView img2;

public TitleLayout(Context context, AttributeSet attrs) {
super(context, attrs);
//动态加载标题栏布局
LayoutInflater.from(context).inflate(R.layout.custom_layout, this);
initView();
img.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getContext(),"嘻嘻",Toast.LENGTH_SHORT).show();
}
});
tv.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(getContext(),"哈哈",Toast.LENGTH_SHORT).show();
}
});
img2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent =new Intent(getContext(),Trapezoid.class);
getContext().startActivity(intent);
}
});
}

private void initView() {//初始化控件
img= findViewById(R.id.img);
img2=findViewById(R.id.img2);
tv =findViewById(R.id.tv);
}

}

主包下Trapezoid类

public class Trapezoid extends Activity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_trapezoid);

}
}