Android自定义Progress控件的方法

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.support.annotation.AttrRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.TextView;

/**
 * Created by LiuZhen on 2017/7/8.
 */

public class UpdateProgressBar extends FrameLayout {

  private TextView tv_progress;
  private int width;
  private ViewGroup.LayoutParams params;
  /**
   * The progress text offset.
   */
  private int mOffset;
  /**
   * The progress text size.
   */
  private float mTextSize;
  /**
   * The progress text color.
   */
  private int mTextColor;
  private float default_text_size;
  /**
   * The progress area bar color.
   */
  private int mReachedBarColor;
  /**
   * The bar unreached area color.
   */
  private int mUnreachedBarColor;
  private final int default_reached_color = Color.rgb(66, 145, 241);
  private final int default_unreached_color = Color.rgb(204, 204, 204);
  private final int default_text_color = Color.rgb(66, 145, 241);

  public UpdateProgressBar(@NonNull Context context) {
    this(context,null);
  }

  public UpdateProgressBar(@NonNull Context context, @Nullable AttributeSet attrs) {
    this(context, attrs,0);
  }

  public UpdateProgressBar(@NonNull Context context, @Nullable AttributeSet attrs, @AttrRes int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init(attrs, defStyleAttr);
  }

  @Override
  protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

    int desiredWidth = 100;
    int desiredHeight = 100;

    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    int height;

    //Measure Width
    if (widthMode == MeasureSpec.EXACTLY) {
      //Must be this size
      width = widthSize;
    } else if (widthMode == MeasureSpec.AT_MOST) {
      //Can't be bigger than...
      width = Math.min(desiredWidth, widthSize);
    } else {
      //Be whatever you want
      width = desiredWidth;
    }

    //Measure Height
    if (heightMode == MeasureSpec.EXACTLY) {
      //Must be this size
      height = heightSize;
    } else if (heightMode == MeasureSpec.AT_MOST) {
      //Can't be bigger than...
      height = Math.min(desiredHeight, heightSize);
    } else {
      //Be whatever you want
      height = desiredHeight;
    }

    int childCount = getChildCount();
    for (int i = 0; i 

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import com.progressbar.NumberProgressBar;

import java.util.Timer;
import java.util.TimerTask;


public class MainActivity extends AppCompatActivity {
  private Timer timer;
  private UpdateProgressBar progressBar;
  private int progress;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    progressBar = (UpdateProgressBar)findViewById(R.id.progress);

    timer = new Timer();
    timer.schedule(new TimerTask() {
      @Override
      public void run() {
        runOnUiThread(new Runnable() {
          @Override
          public void run() {
            progress++;
            progressBar.setProgress(progress);
            if(progress == 100) {
              Toast.makeText(getApplicationContext(), getString(R.string.finish), Toast.LENGTH_SHORT).show();
//              progress = 0;
//              progressBar.setProgress(0);
              timer.cancel();
            }
          }
        });
      }
    }, 1000, 100);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    timer.cancel();
  }
}

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