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前言
本文主要給大家介紹了關于Android條紋進度條(調整view寬度仿進度條)的相關內容,分享出來供大家參考學習,下面話不多說了,來一起看看詳細的介紹吧
方法如下:
美工同學指定了一個進度條樣式
進度條樣式
這斑斕的進度條,如果要自己畫實在是勞民傷財。于是請美工切了一張素材。
素材樣例
如果用shape或者.9圖片不太好處理這個條紋。轉變思路,放置2張圖片。一張作為背景(底,bottom),一張作為進度條圖片(cover)。
進度改變時,改變上面圖片的寬度。
這就要求上面的圖片是圓角的。自定義ImageView,調用canvas.clipPath
來切割畫布。
public class RoundCornerImageView extends android.support.v7.widget.AppCompatImageView { private float mRadius = 18; private Path mClipPath = new Path(); private RectF mRect = new RectF(); public RoundCornerImageView(Context context) { super(context); } public RoundCornerImageView(Context context, AttributeSet attrs) { super(context, attrs); } public RoundCornerImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } public void setRadiusDp(float dp) { mRadius = dp2px(dp, getResources()); postInvalidate(); } public void setRadiusPx(int px) { mRadius = px; postInvalidate(); } @Override protected void onDraw(Canvas canvas) { mRect.set(0, 0, this.getWidth(), this.getHeight()); mClipPath.reset(); // remember to reset path mClipPath.addRoundRect(mRect, mRadius, mRadius, Path.Direction.CW); canvas.clipPath(mClipPath); super.onDraw(canvas); } private float dp2px(float value, Resources resources) { return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value, resources.getDisplayMetrics()); } }
每次繪制都切割一次圓角。記得調用Path.reset()
方法。
回到我們要的進度條。布局文件中放置好層疊的圖片。
<RelativeLayout android:id="@+id/progress_layout" android:layout_width="190dp" android:layout_height="10dp" android:layout_centerInParent="true"> <ImageView android:id="@+id/p_bot_iv" android:layout_width="190dp" android:layout_height="10dp" android:src="@drawable/shape_round_corner_bottom" /> <com.rustfisher.view.RoundCornerImageView android:id="@+id/p_cover_iv" android:layout_width="100dp" android:layout_height="10dp" android:scaleType="centerCrop" android:src="@drawable/pic_cover_blue_white" /> </RelativeLayout>
需要在代碼中動態地改變cover的寬度;dialog中提供如下方法改變LayoutParams
public void updatePercent(int percent) { mPercent = percent; mPercentTv.setText(String.format(Locale.CHINA, "%2d%%", mPercent)); float percentFloat = mPercent / 100.0f; final int ivWidth = mBotIv.getWidth(); RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) mProgressIv.getLayoutParams(); int marginEnd = (int) ((1 - percentFloat) * ivWidth); lp.width = ivWidth - marginEnd; mProgressIv.setLayoutParams(lp); mProgressIv.postInvalidate(); }
顯示出dialog并傳入進度,就可以看到效果了。
這只是實現效果的一種方法,如果有更多的想法,歡迎和我交流~
相關代碼請參閱:
https://github.com/RustFisher/aboutView/blob/master/app/src/main/java/com/rust/aboutview/activity/RoundCornerActivity.java
package com.rust.aboutview.activity; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.support.annotation.Nullable; import android.support.v4.app.DialogFragment; import android.support.v7.app.AppCompatActivity; import android.view.View; import com.rust.aboutview.R; import com.rust.aboutview.widget.RoundCornerProgressDialog; import com.rustfisher.view.RoundCornerImageView; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; /** * 圓角圖片示例 * Created by Rust on 2018/5/23. */ public class RoundCornerActivity extends AppCompatActivity implements View.OnClickListener { @BindView(R.id.r_iv_1) RoundCornerImageView mRIv1; @BindView(R.id.r_iv_2) RoundCornerImageView mRIv2; @BindView(R.id.r_iv_3) RoundCornerImageView mRIv3; @BindView(R.id.r_iv_4) RoundCornerImageView mRIv4; private Handler mMainHandler = new Handler(Looper.getMainLooper()); private RoundCornerProgressDialog mRoundCornerProgressDialog; private ProgressThread mProgressThread; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.act_round_corner); initUI(); } private void initUI() { ButterKnife.bind(this); mRIv1.setRadiusDp(12); mRIv2.setRadiusDp(23); mRIv3.setRadiusPx(40); mRIv4.setRadiusPx(200); } @OnClick(R.id.pop_dialog_btn) @Override public void onClick(View v) { switch (v.getId()) { case R.id.pop_dialog_btn: popRoundProgressDialog(); break; } } private void popRoundProgressDialog() { if (null == mRoundCornerProgressDialog) { mRoundCornerProgressDialog = new RoundCornerProgressDialog(); } mRoundCornerProgressDialog.setStyle(DialogFragment.STYLE_NORMAL, R.style.AppTranslucentOrigin); mRoundCornerProgressDialog.show(getSupportFragmentManager(), RoundCornerProgressDialog.F_TAG); if (null != mProgressThread) { mProgressThread.interrupt(); try { mProgressThread.join(400); } catch (InterruptedException e) { e.printStackTrace(); } mProgressThread = null; } mProgressThread = new ProgressThread(); mProgressThread.start(); } private class ProgressThread extends Thread { private int progress = 0; @Override public void run() { super.run(); while (!isInterrupted()) { progress++; try { Thread.sleep(50); } catch (InterruptedException e) { e.printStackTrace(); break; } if (progress > 100) { progress = 0; } final int p = progress; mMainHandler.post(new Runnable() { @Override public void run() { mRoundCornerProgressDialog.updatePercent(p); } }); } } } }
總結
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