102.android 简单的自定义ProgressBar升级

//1. Activity代码，布局简单就一个按钮： 

public class MainUpdateActivity extends AppCompatActivity implements View.OnClickListener {
    private Button mButton;
    private SeleDialog selectDialog;
    private TextView serviceTitle;
    private TextView textView;
    private ProgressBar progressBar;
    private View serviceTitleLine;
    private LinearLayout linearLayout;

    private int i;

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

    private void initView() {
        mButton = (Button) findViewById(R.id.mButton);

        mButton.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.mButton:
                selectDialog = new SeleDialog(this, "发现新版本");
                selectDialog.setCancelable(false);
                selectDialog.show();

                serviceTitle = selectDialog.getTitleTextView();
                textView = selectDialog.getTextView();
                progressBar = selectDialog.getmDialogProgressbar();
                serviceTitleLine = selectDialog.getServiceTitleLine();
                linearLayout = selectDialog.getmServiceDialog();
                selectDialog.addListen(new SeleDialog.SelectDialogListen() {
                    @Override
                    public void onClickOk(Object obj) {
                        handler.sendEmptyMessage(1);
                    }

                    @Override
                    public void onClickCancel(Object obj) {

                    }
                });
                break;
        }
    }

    Handler handler = new Handler(Looper.myLooper()) {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if (msg.what == 1) {
                i = 0;
                serviceTitle.setText("下载中");
                serviceTitleLine.setVisibility(View.GONE);
                progressBar.setVisibility(View.VISIBLE);
                linearLayout.setVisibility(View.GONE);


                new CountDownTimer(10000, 100) {
                    @Override
                    public void onTick(long millisUntilFinished) {
                        i += 1;
                        progressBar.setProgress(i);
                        textView.setText("请稍后...  " + i + "%");
                    }

                    @Override
                    public void onFinish() {
                        selectDialog.dismiss();
                        Toast.makeText(MainUpdateActivity.this, "下载完成", Toast.LENGTH_SHORT).show();
                    }
                }.start();
            }
        }
    };
}

 //2. 自定义的Dialog弹出框  SeleDialog：

 

public class SeleDialog extends Dialog implements View.OnClickListener {
    private View ok;
    private View cancel;
    private String content;
    private SelectDialogListen listen;

    private TextView textView;
    private TextView serviceTitle;
    private View serviceTitleLine;
    private ProgressBar mDialogProgressbar;
    private LinearLayout mServiceDialog;

    public void addListen(SelectDialogListen listen) {
        this.listen = listen;
    }

    public SeleDialog(Context context, String content) {
        super(context, R.style.dialog_offer);
        this.content = content;

    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sele_dialog);
        cancel = findViewById(R.id.dialog_cancel);
        serviceTitle = (TextView) findViewById(R.id.service_title);
        serviceTitleLine = findViewById(R.id.service_title_line);
        mDialogProgressbar = (ProgressBar) findViewById(R.id.mDialogProgressbar);
        mServiceDialog = (LinearLayout) findViewById(R.id.mServiceDialog);
        textView = (TextView) findViewById(R.id.dialog_content);
        if (!TextUtils.isEmpty(content)) {
            textView.setText(content);
        }
        ok = findViewById(R.id.dialog_ok);
        ok.setOnClickListener(this);
        cancel.setOnClickListener(this);
    }


    public TextView getTextView() {
        return textView;
    }


    public TextView getTitleTextView() {
        return serviceTitle;
    }

    public View getOkView() {
        return ok;
    }

    public View getCancelView() {
        return cancel;
    }

    public View getServiceTitleLine() {
        return serviceTitleLine;
    }

    public ProgressBar getmDialogProgressbar() {
        return mDialogProgressbar;
    }

    public LinearLayout getmServiceDialog() {
        return mServiceDialog;
    }

    @Override
    public void onClick(View v) {
        //dismiss();
        if (null == listen) {
            return;
        }
        if (v == ok) {
            listen.onClickOk(null);
        } else if (v == cancel) {
            dismiss();
            listen.onClickCancel(null);
        }
    }


    public interface SelectDialogListen {
        void onClickOk(Object obj);

        void onClickCancel(Object obj);
    }
}

//3. Dialog的布局sele_dialog.xml:

 

//4.自定义ProgressBar，创建UpdateProgress：

 

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.ProgressBar;

public class UpdateProgress extends ProgressBar {
    String text;
    Paint mPaint;

    public UpdateProgress(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
        initText();
    }

    public UpdateProgress(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        // TODO Auto-generated constructor stub
        initText();
    }


    public UpdateProgress(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
        initText();
    }

    @Override
    public synchronized void setProgress(int progress) {
        // TODO Auto-generated method stub
        setText(progress);
        super.setProgress(progress);

    }

    @Override
    protected synchronized void onDraw(Canvas canvas) {
        // TODO Auto-generated method stub
        super.onDraw(canvas);
        //this.setText();
        Rect rect = new Rect();
        mPaint.setTextSize(30);
        this.mPaint.getTextBounds(this.text, 0, this.text.length(), rect);
//        int x = (getWidth() / 2) - rect.centerX();
        int y = (getHeight() / 2) - rect.centerY();
        //进度
        float radio = getProgress() * 1.0f / getMax();
        float x = (int) (getWidth() * radio);
        canvas.drawText(this.text, x - 65, y, this.mPaint);
    }

    //初始化，画笔
    private void initText() {
        this.mPaint = new Paint();
        this.mPaint.setColor(Color.WHITE);

    }

    private void setText() {
        setText(this.getProgress());
    }

    //设置文字内容
    private void setText(int progress) {
        int i = (progress * 100) / this.getMax();
        this.text = String.valueOf(i) + "%";
    }


}

//5. Dialog的style，dialog_offer: 

 

//6. 设置自定义ProgressBar的背景，在drawable下progressbar_color.xml：

 

//----------------------------------------------------------------------------完--------------------------------------------------------------------------------