动画android进度条

我在我的视图中创建了ProgressBar，我希望它在更新值时进行动画制作。我正在运行API 23上的代码。如何在更新值时动画progressBar？动画android进度条

这里是我的活动：

package com.brylkowski.cleaner.cleaner.Errands; 

import android.os.AsyncTask; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.support.v7.app.AppCompatActivity; 
import android.widget.ProgressBar; 

import com.brylkowski.cleaner.cleaner.R; 

public class UploadErrandActivity extends AppCompatActivity { 

    public static final String PROGRESS = "progress"; 
    UploadRequestTask task; 
    private ProgressBar progressBar; 
    private Handler handler; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_upload_errand); 
     progressBar = (ProgressBar) findViewById(R.id.upload_progress); 
     progressBar.setMax(6); 
     task = new UploadRequestTask(); 
     handler = new Handler() { 
      public void handleMessage(android.os.Message msg) { 
       progressBar.incrementProgressBy(1); 

      } 
     }; 
     task.execute(); 
    } 

    public class UploadRequestTask extends AsyncTask<Void, Void, Boolean> { 

     UploadRequestTask() { 
     } 

     @Override 
     protected Boolean doInBackground(Void... params) { 
      for (int i = 1; i <=6; i++){ 
       Message msg = new Message(); 
       Bundle bundle = new Bundle(); 
       bundle.putInt(PROGRESS, i); 
       msg.setData(bundle); 
       handler.sendMessage(msg); 
       try { 
        Thread.sleep(1000); 
       } catch (InterruptedException e) { 
        e.printStackTrace(); 
       } 
      } 
      return true; 
     } 

     @Override 
     protected void onPostExecute(final Boolean success) { 
     } 

     @Override 
     protected void onCancelled() { 
     } 
    } 
}

和我的观点：

<?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:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:orientation="vertical" 
    android:gravity="center" 
    tools:context="com.brylkowski.cleaner.cleaner.Errands.UploadErrandActivity"> 

    <ProgressBar 
     style="?android:attr/progressBarStyleHorizontal" 
     android:indeterminate="false" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:id="@+id/upload_progress" 
     android:layout_gravity="bottom" 
     android:longClickable="false"/> 


</LinearLayout>

来源

2016-08-19 Hubert

检查this如何使进度动画。您需要的唯一修改是在视图初始化时不使用动画，而需要在每次要更新值时调用

ProgressBarAnimation anim = new ProgressBarAnimation(progressBar, progressBar.getProgress(), to); 
anim.setDuration(1000); 
progressBar.startAnimation(anim); // play animation immediately

。 Here是视图动画的文档。

来源

2016-08-19 15:27:58 solosodium

动画android进度条

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