51工具盒子为者败之，执者失之。------《道德经》
原生安卓实现的进度条
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | hljs java package com.example.uidemo.activity; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ProgressBar; import android.widget.SeekBar; import android.widget.TextView; import com.example.uidemo.R; import java.math.BigDecimal; import java.util.Locale; public class ProgressBarActivity extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener { private SeekBar seekBar; private ProgressBar progressBar1; private ProgressBar progressBar2; private TextView loadingText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_progress_bar); seekBar=findViewById(R.id.seek_bar); progressBar1=findViewById(R.id.progress_bar1); progressBar2=findViewById(R.id.progress_bar2); loadingText=findViewById(R.id.loading_text); seekBar.setOnSeekBarChangeListener(this); } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { String per=progress+"%"; if(progress==seekBar.getMax()){ loadingText.setText("加载完成"); progressBar1.setVisibility(View.GONE); }else{ loadingText.setText("正在加载中("+per+")"); progressBar1.setVisibility(View.VISIBLE); progressBar2.setProgress(progress); } } @Override public void onStartTrackingTouch(SeekBar seekBar) { // int progress = seekBar.getProgress(); // System.out.println(progress); // progressBar2.setProgress(progress); } @Override public void onStopTrackingTouch(SeekBar seekBar) { progressBar2.setProgress(seekBar.getProgress()); } } |
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | hljs xml <?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".activity.ProgressBarActivity" > <LinearLayout android:id="@+id/linearLayout1" android:layout_width="match_parent" android:layout_height="wrap_content" app:layout_constraintTop_toTopOf="parent" app:layout_constraintStart_toStartOf="parent" android:orientation="horizontal" android:gravity="center" > <ProgressBar android:id="@+id/progress_bar1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/loading_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="正在加载中(0%)" android:textSize="20dp" /> </LinearLayout> <LinearLayout android:id="@+id/linearLayout2" android:layout_width="match_parent" android:layout_height="wrap_content" app:layout_constraintTop_toBottomOf="@id/linearLayout1" app:layout_constraintStart_toStartOf="parent" android:orientation="vertical" > <ProgressBar android:id="@+id/progress_bar2" android:layout_width="match_parent" android:layout_height="wrap_content" style="?android:attr/progressBarStyleHorizontal" android:progress="0" android:max="100" /> <SeekBar android:id="@+id/seek_bar" android:layout_width="match_parent" android:layout_height="wrap_content" android:max="100" /> </LinearLayout> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/linearLayout2" android:text="1.滑动下面的滑杆后，上面的进度条同步\n2.滑动到最大值后最上方ProgressBar改变(隐藏)" /> </androidx.constraintlayout.widget.ConstraintLayout> |
