自定义组件（二）

上一次我用include实现的这个功能，这次用自定义布局来实现，

创建CompoundView类重写前三个构造方法

 private void initView(Context mContext ){        LayoutInflater inflater=(LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        //将compound_view导入LinearLayout中        inflater.inflate(R.layout.compound_view,this);        btn= (Button) this.findViewById(R.id.view_item_btn);        mProgressBar=(ProgressBar)this.findViewById(R.id.view_pbar);    }

在initView（）方法中把自己的布局加载进去
定义

 private  int max=100;//最大进度    private int progress=0;//当前进度    private OnClickListener listener;

设置他们的set方法

//提供给使用者设置butter监听的    public void setListener(OnClickListener listener) {        this.listener = listener;        //为butter设置监听        btn.setOnClickListener(listener);    }    public void setMax(int max) {        this.max = max;        mProgressBar.setMax(max);    }    public void setProgress(int progress) {        if(progress>max){            this.progress=max;        }else {            this.progress = progress;        }        mProgressBar.setProgress(progress);    }

重写onFinishInflate
@Override
protected void onFinishInflate() {
super.onFinishInflate();
//设置进度条默认最大值
mProgressBar.setMax(max);
}

自定义布局中的代码就完了
在MainActivity中引入布局
设置默认的最大值和监听事件

 myView.setMax(50);        myView.setListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                b=false;                i=0;                myView.setProgress(i);            }        });

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全部代码
重写xml布局
compound_view

<?xml version="1.0" encoding="utf-8"?><merge xmlns:android="http://schemas.android.com/apk/res/android"              android:layout_width="match_parent"              android:orientation="horizontal"              android:gravity="center"              android:padding="20dp"              android:layout_height="match_parent">    <ProgressBar        android:layout_width="5dp"        android:layout_height="wrap_content"        android:layout_weight="1"        android:id="@+id/view_pbar"        style="?android:attr/progressBarStyleHorizontal"        android:max="10"        />    <Button        android:layout_width="0dp"        android:layout_height="wrap_content"        android:id="@+id/view_item_btn"        android:layout_weight="1"        android:text="取消下载"        /></merge>

mainActivity的布局代码

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">    <Button        android:id="@+id/main_btn"        android:text="下载"        android:layout_height="wrap_content"        android:layout_width="match_parent"        />    <com.axnet.viewapp.CompoundView        android:id="@+id/main_in"        android:layout_height="wrap_content"        android:layout_width="match_parent"        layout="@layout/main_item"        /></LinearLayout>

CompoundView代码

public class CompoundView extends LinearLayout{    private Button btn;    private ProgressBar mProgressBar;    private  int max=100;//最大进度    private int progress=0;//当前进度    private OnClickListener listener;    public CompoundView(Context context) {        super(context);        initView(context);    }    public CompoundView(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        initView(context);    }    public CompoundView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        initView(context);    }    @Override    protected void onFinishInflate() {        super.onFinishInflate();        //设置进度条默认最大值        mProgressBar.setMax(max);    }    //提供给使用者设置butter监听的    public void setListener(OnClickListener listener) {        this.listener = listener;        //为butter设置监听        btn.setOnClickListener(listener);    }    public void setMax(int max) {        this.max = max;        mProgressBar.setMax(max);    }    public void setProgress(int progress) {        if(progress>max){            this.progress=max;        }else {            this.progress = progress;        }        mProgressBar.setProgress(progress);    }    private void initView(Context mContext ){        LayoutInflater inflater=(LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);        //将compound_view导入LinearLayout中        inflater.inflate(R.layout.compound_view,this);        btn= (Button) this.findViewById(R.id.view_item_btn);        mProgressBar=(ProgressBar)this.findViewById(R.id.view_pbar);    }}

mainActivity代码

public class MainActivity extends AppCompatActivity {    Button main_btn,main_item_btn;    CompoundView myView;    int i=0;    boolean b=true;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initView();        initClick();    }    private void initClick() {        //下载按钮        main_btn.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                b=true;                new Thread(new Runnable() {                    @Override                    public void run() {                        while (b){                            try {                                Thread.sleep(1000);                                runOnUiThread(new Runnable() {                                    @Override                                    public void run() {                                        myView.setProgress(i++);                                    }                                });                            } catch (InterruptedException e) {                                e.printStackTrace();                            }                        }                    }                }).start();            }        });        myView.setMax(50);        myView.setListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                b=false;                i=0;                myView.setProgress(i);            }        });    }    private void initView() {        main_btn=(Button)findViewById(R.id.main_btn);        myView= (CompoundView) findViewById(R.id.main_in);    }}