Android自定义标题+画圆+进度条

主函数里代码

package shidongliang.bwei.com.zhoukaodemo02;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;

import shidongliang.bwei.com.zhoukaodemo02.view.CustomProgess;

public class MainActivity extends AppCompatActivity implements TitleView.MyCallBack {

private CustomProgess progres;

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

progres = (CustomProgess) findViewById(R.id.custom_path);

TitleView titleView = (TitleView) findViewById(R.id.titleview_id);
titleView.setCallBack(this);

findViewById(R.id.btn_id).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
progres.start();
}
});

}

@Override
public void leftClick() {
Toast.makeText(this, "left", Toast.LENGTH_SHORT).show();
}

@Override
public void rightClick() {
Toast.makeText(this, "right", Toast.LENGTH_SHORT).show();

}
}

package shidongliang.bwei.com.zhoukaodemo02;

import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;

/**
* Created by muhanxi on 17/11/4.
*/

public class TitleView extends LinearLayout {
public TitleView(Context context) {
super(context);
}

public TitleView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);

View view = LayoutInflater.from(context).inflate(R.layout.kaoshi_title_layout,null);
view.setLayoutParams(new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
addView(view);

Button buttonLeft = (Button) view.findViewById(R.id.left_btn);

Button buttonRight = (Button) view.findViewById(R.id.right_btn);

buttonLeft.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
callBack.leftClick();
}
});
buttonRight.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
callBack.rightClick();
}
});

}

public TitleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}

private MyCallBack callBack ;
public void setCallBack(MyCallBack callBack){
this.callBack = callBack;
}

public interface  MyCallBack {
public void leftClick();
public void rightClick();

}

}

画圆代码

package shidongliang.bwei.com.zhoukaodemo02.view;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;

/**
* Created by muhanxi on 17/11/4.
*/

public class CircleView extends View {

Paint paint ;

public CircleView(Context context) {
super(context);
}
int progress = 0 ;
int max = 360;
public CircleView(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
paint = new Paint();

new Thread(new Runnable() {
@Override
public void run() {

while (true){

if(progress > 360){
return;

}
postInvalidate();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
progress += 36 ;

}

}
}).start();

}

public CircleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);

paint.setColor(Color.BLACK);
canvas.drawCircle(300,300,100,paint);

RectF rectF = new RectF(200,200,400,400);
paint.setColor(Color.RED);
paint.setStrokeWidth(20);
paint.setStyle(Paint.Style.STROKE);
canvas.drawArc(rectF,-90,progress,false,paint);

paint.setColor(Color.WHITE);
paint.setStyle(Paint.Style.FILL);
int percent = progress;  //中间的进度百分比，先转换成float在进行除法运算，不然都为0
float textWidth = paint.measureText(percent+"  %   ");
paint.setTextSize(20);
canvas.drawText((float)progress/(float) 360 * 100 +"%",300,300,paint);

}
}

package shidongliang.bwei.com.zhoukaodemo02.view;

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.View;

import com.xys.libzxing.zxing.activity.CaptureActivity;

/**
* Created by LYY on 2017/11/4.
*/
public class CustomProgess extends View {

private Paint paint;

private int progress = 0 ;

Context context ;

public CustomProgess(Context context) {
super(context);

}

public CustomProgess(Context context, AttributeSet attrs) {
this(context, attrs,0);

}

public CustomProgess(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.context = context;
//创建一个画笔
paint = new Paint();
// 抗锯齿
paint.setAntiAlias(true);
//设置画笔的颜色
paint.setColor(Color.RED);
//设置画笔 填充是空心的
paint.setStyle(Paint.Style.STROKE);

}

public void start(){
new Thread(new Runnable() {
@Override
public void run() {

while (true){

if(progress >= 360){

return;
}

progress += 10 ;

//子线程刷新 系统调用onDraw（） 方法
postInvalidate();

try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}

}

}
}).start();
}

@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
//  getWidth（） 获取当前View 的宽度
int x =  getWidth() / 2 ;
int y = getHeight() / 2 ;

int radius =  200 ;

//设置画笔的粗细
paint.setStrokeWidth(30);
//定义一个区域
RectF rectF = new RectF(x-radius,y-radius,x+radius,y+radius);
//画弧

canvas.drawArc(rectF,-90,progress,false,paint);

int text = (int) ((float)progress / 360  * 100 );

float textWidth =  paint.measureText(text+"%");
Rect rextText = new Rect();

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(progress == 360 ){

Intent intent=new Intent(context,CaptureActivity.class);
context.startActivity(intent);

}

}

}

主函数布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"

tools:context="shidongliang.bwei.com.zhoukaodemo02.MainActivity">

<shidongliang.bwei.com.zhoukaodemo02.TitleView
android:id="@+id/titleview_id"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</shidongliang.bwei.com.zhoukaodemo02.TitleView>

<shidongliang.bwei.com.zhoukaodemo02.view.CustomProgess
android:id="@+id/custom_path"
android:layout_below="@+id/titleview_id"
android:layout_width="match_parent"
android:layout_height="match_parent"  />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btn_id"
android:text="扫描二维码"
/>
</RelativeLayout>

<?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"><Buttonandroid:id="@+id/left_btn"android:layout_width="50dp"android:layout_height="wrap_content"android:text="返回"/><TextViewandroid:layout_weight="1"android:gravity="center"android:text="那些花儿"android:layout_width="0dp"android:layout_height="wrap_content" /><Buttonandroid:id="@+id/right_btn"android:layout_width="50dp"android:layout_height="wrap_content"android:text="进入"/></LinearLayout>