Android(安卓)中 ProgressBar 和 AlertDialog 的加载的基本使用
16lz
2021-12-04
Android 中 ProgressBar 和 ProgressDialog 的基本使用
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- 1. ProgressBar
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- 1.1 默认效果
- 1.2 自定义样式
- 2. AlertDialog 的加载
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- 2.1 默认效果
- 2.2 自定义样式
1. ProgressBar
1.1 默认效果
ProgressActivity
package com.example.hello;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import android.annotation.SuppressLint;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.widget.Button;import android.widget.ProgressBar;import com.example.hello.util.ToastUtil;public class ProgressActivity extends AppCompatActivity { // 声明 private ProgressBar pb4; private Button btnSimulation; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_progress); // 获取 pb4 = findViewById(R.id.pb_4); // 获取 btnSimulation = findViewById(R.id.btn_pb_simulation); btnSimulation.setOnClickListener(v -> { // 发送消息 handler.sendEmptyMessage(0); }); } @SuppressLint("HandlerLeak") Handler handler = new Handler() { @Override public void handleMessage(@NonNull Message msg) { super.handleMessage(msg); if (pb4.getProgress() < 100) { // 延迟执行 0.5s handler.postDelayed(runnable, 500); } else { ToastUtil.showShortToast(ProgressActivity.this, "加载完成"); } } }; Runnable runnable = new Runnable() { @Override public void run() { pb4.setProgress(pb4.getProgress() + 3); handler.sendEmptyMessage(0); } };}activity_progress
<?xml version="1.0" encoding="utf-8"?><LinearLayout 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" android:gravity="center_horizontal" android:orientation="vertical" android:padding="15dp" tools:context=".ProgressActivity"> <ProgressBar android:id="@+id/pb_1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:visibility="visible" /> <ProgressBar android:id="@+id/pb_2" style="@android:style/Widget.ProgressBar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="10dp" /> <ProgressBar android:id="@+id/pb_3" style="@android:style/Widget.ProgressBar.Horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:max="100" android:progress="10" android:secondaryProgress="30" /> <ProgressBar android:id="@+id/pb_4" style="@android:style/Widget.Material.ProgressBar.Horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:max="100" android:progress="10" /> <Button android:id="@+id/btn_pb_simulation" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:background="@drawable/bg_btn4" android:text="@string/pbSimulation" android:textColor="@color/white_up" />LinearLayout>1.2 自定义样式
<ProgressBar android:id="@+id/pb_5" style="@android:style/Widget.ProgressBar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="10dp" android:indeterminateDrawable="@drawable/bg_progress" /> <ProgressBar android:id="@+id/pb_6" style="@style/MyProgressBar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="10dp" />bg_progress 文件中 @drawable/progress 是一个静止的加载照片
<?xml version="1.0" encoding="utf-8"?><animated-rotate xmlns:android="http://schemas.android.com/apk/res/android" android:drawable="@drawable/progress" android:pivotX="50%" android:pivotY="50%">animated-rotate>@style/MyProgressBar 在 values 下的 styles.xml 文件中.
<?xml version="1.0" encoding="utf-8"?><resources> <style name="MyProgressBar"> - "android:indeterminateOnly"
>true - "android:indeterminateDrawable">@drawable/bg_progress
- "android:indeterminateBehavior">repeat
- "android:indeterminateDuration">3500
- "android:minWidth">48dip
- "android:maxWidth">48dip
- "android:minHeight">48dip
- "android:maxHeight">48dip
- "android:mirrorForRtl">false
style>resources>2. AlertDialog 的加载
ProgressDialog被弃用了. 所以没有转动加载的动漫效果. 添加需要自定义.
2.1 默认效果
<Button android:id="@+id/btn_pb_dialog_1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="15dp" android:background="@drawable/bg_btn2" android:text="@string/pbDialog1" />package com.example.hello;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import android.annotation.SuppressLint;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.Context;import android.content.DialogInterface;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.widget.Button;import android.widget.ProgressBar;import com.example.hello.util.ToastUtil;public class ProgressActivity extends AppCompatActivity { // 声明 private ProgressBar pb4; private Button btnSimulation, pbDialog1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_progress); // 获取 pb4 = findViewById(R.id.pb_4); // 获取 btnSimulation = findViewById(R.id.btn_pb_simulation); btnSimulation.setOnClickListener(v -> { // 发送消息 handler.sendEmptyMessage(0); }); // 获取 pbDialog1 = findViewById(R.id.btn_pb_dialog_1); pbDialog1.setOnClickListener(v -> { LoadingDialog loadingDialog = new LoadingDialog(ProgressActivity.this); loadingDialog.setTitle("提示"); loadingDialog.setMessage("正在加载..."); loadingDialog.setOnCancelListener(dialog -> { ToastUtil.showShortToast(ProgressActivity.this, "cancel..."); }); loadingDialog.show(); }); } /** * AlertDialog 的加载 */ static class LoadingDialog extends AlertDialog { protected LoadingDialog(Context context) { super(context); } protected LoadingDialog(Context context, boolean cancelable, OnCancelListener cancelListener) { super(context, cancelable, cancelListener); } protected LoadingDialog(Context context, int themeResId) { super(context, themeResId); } } @SuppressLint("HandlerLeak") Handler handler = new Handler() { @Override public void handleMessage(@NonNull Message msg) { super.handleMessage(msg); if (pb4.getProgress() < 100) { // 延迟执行 0.5s handler.postDelayed(runnable, 500); } else { ToastUtil.showShortToast(ProgressActivity.this, "加载完成"); } } }; Runnable runnable = new Runnable() { @Override public void run() { pb4.setProgress(pb4.getProgress() + 3); handler.sendEmptyMessage(0); } };}
2.2 自定义样式
ProgressActivity
package com.example.hello;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import android.annotation.SuppressLint;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.Context;import android.content.DialogInterface;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.widget.Button;import android.widget.ProgressBar;import com.example.hello.util.ToastUtil;import com.example.hello.widget.CustomDialog;public class ProgressActivity extends AppCompatActivity { // 声明 private ProgressBar pb4; private Button btnSimulation, pbDialog1, pbDialog2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_progress); // 获取 pb4 = findViewById(R.id.pb_4); // 获取 btnSimulation = findViewById(R.id.btn_pb_simulation); btnSimulation.setOnClickListener(v -> { // 发送消息 handler.sendEmptyMessage(0); }); // 获取 pbDialog1 = findViewById(R.id.btn_pb_dialog_1); pbDialog1.setOnClickListener(v -> { LoadingDialog loadingDialog = new LoadingDialog(ProgressActivity.this); loadingDialog.setTitle("提示"); loadingDialog.setMessage("正在加载..."); loadingDialog.setOnCancelListener(dialog -> { ToastUtil.showShortToast(ProgressActivity.this, "cancel..."); }); loadingDialog.show(); }); pbDialog2 = findViewById(R.id.btn_pb_dialog_2); pbDialog2.setOnClickListener(v -> { CustomDialog customDialog = new CustomDialog(ProgressActivity.this, R.style.CustomDialog); customDialog.setTitle("提示").setMessage("确定删除此项？").setCancel("取消", dialog -> { ToastUtil.showShortToast(ProgressActivity.this, "取消成功"); }).setConfirm("确定", dialog -> { ToastUtil.showShortToast(ProgressActivity.this, "删除成功"); }).setCustomCancelable(false).show(); }); } /** * AlertDialog 的加载 */ static class LoadingDialog extends AlertDialog { protected LoadingDialog(Context context) { super(context); } protected LoadingDialog(Context context, boolean cancelable, OnCancelListener cancelListener) { super(context, cancelable, cancelListener); } protected LoadingDialog(Context context, int themeResId) { super(context, themeResId); } } @SuppressLint("HandlerLeak") Handler handler = new Handler() { @Override public void handleMessage(@NonNull Message msg) { super.handleMessage(msg); if (pb4.getProgress() < 100) { // 延迟执行 0.5s handler.postDelayed(runnable, 500); } else { ToastUtil.showShortToast(ProgressActivity.this, "加载完成"); } } }; Runnable runnable = new Runnable() { @Override public void run() { pb4.setProgress(pb4.getProgress() + 3); handler.sendEmptyMessage(0); } };}CustomDialog 文件是自定义的 Dialog.
package com.example.hello.widget;import android.annotation.SuppressLint;import android.app.Dialog;import android.content.Context;import android.graphics.Point;import android.os.Bundle;import android.text.TextUtils;import android.view.Display;import android.view.View;import android.view.WindowManager;import android.widget.TextView;import androidx.annotation.NonNull;import androidx.annotation.Nullable;import com.example.hello.R;public class CustomDialog extends Dialog implements View.OnClickListener { private TextView tvTitle, tvMassage, tvCancel, tvConfirm; private String title, message, cancel, confirm; private IOnCancelListener cancelListener; private IOnConfirmListener confirmListener; public CustomDialog setTitle(String title) { this.title = title; return this; } public CustomDialog setMessage(String message) { this.message = message; return this; } public CustomDialog setCancel(String cancel, IOnCancelListener listener) { this.cancel = cancel; this.cancelListener = listener; return this; } public CustomDialog setConfirm(String confirm, IOnConfirmListener listener) { this.confirm = confirm; this.confirmListener = listener; return this; } public CustomDialog(@NonNull Context context) { super(context); } public CustomDialog(@NonNull Context context, int themeResId) { super(context, themeResId); } protected CustomDialog(@NonNull Context context, boolean cancelable, @Nullable OnCancelListener cancelListener) { super(context, cancelable, cancelListener); } /** * 自定义 setCancelable 方法返回 CustomDialog * * @param flag 是否点击周围消失 * @return CustomDialog */ public CustomDialog setCustomCancelable(boolean flag) { this.setCancelable(false); return this; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_custom); // 设置宽度 WindowManager width = getWindow().getWindowManager(); Display defaultDisplay = width.getDefaultDisplay(); WindowManager.LayoutParams layoutParams = getWindow().getAttributes(); Point size = new Point(); defaultDisplay.getSize(size); // 设置宽度为当前手机屏幕的 0.8 倍 layoutParams.width = (int) (size.x * 0.8); getWindow().setAttributes(layoutParams); // 获取内容 tvTitle = findViewById(R.id.custom_tv_title); tvMassage = findViewById(R.id.custom_tv_message); tvCancel = findViewById(R.id.custom_tv_cancel); tvConfirm = findViewById(R.id.custom_tv_confirm); if (!TextUtils.isEmpty(title)) { tvTitle.setText(title); } if (!TextUtils.isEmpty(message)) { tvMassage.setText(message); } if (!TextUtils.isEmpty(cancel)) { tvCancel.setText(cancel); } if (!TextUtils.isEmpty(confirm)) { tvConfirm.setText(confirm); } tvCancel.setOnClickListener(this); tvConfirm.setOnClickListener(this); } @SuppressLint("NonConstantResourceId") @Override public void onClick(View v) { switch (v.getId()) { case R.id.custom_tv_cancel: if (cancelListener != null) { cancelListener.OnCancel(this); } dismiss(); break; case R.id.custom_tv_confirm: if (confirmListener != null) { confirmListener.OnConfirm(this); } dismiss(); break; } } /** * 取消的监听事件 */ public interface IOnCancelListener { void OnCancel(CustomDialog dialog); } /** * 确定的监听事件 */ public interface IOnConfirmListener { void OnConfirm(CustomDialog dialog); }}activity_custom 文件
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:id="@+id/custom_tv_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="20dp" android:gravity="center" android:text="@string/tips" android:textColor="@color/black" android:textSize="25sp" android:textStyle="bold" /> <TextView android:id="@+id/custom_tv_message" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="35dp" android:layout_marginBottom="25dp" android:gravity="center" android:text="@string/isDelete" android:textColor="@color/black" android:textSize="20sp" /> <View android:layout_width="match_parent" android:layout_height="1dp" android:background="@color/black_low" /> <LinearLayout android:id="@+id/custom_ll" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <TextView android:id="@+id/custom_tv_cancel" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:background="@color/white_up" android:gravity="center" android:padding="10dp" android:text="@string/cancel" android:textColor="@color/purple_700" android:textSize="20sp" /> <View android:layout_width="1dp" android:layout_height="match_parent" android:background="@color/black_low" /> <TextView android:id="@+id/custom_tv_confirm" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:background="@color/white_up" android:gravity="center" android:padding="10dp" android:text="@string/confirm" android:textColor="@color/orange_low" android:textSize="20sp" /> LinearLayout>LinearLayout>R.style.CustomDialog 是 values 下 styles 里内容.
<style name="CustomDialog" parent="android:Theme.Holo.Light.Dialog"> - "android:windowNoTitle"
>true - "android:windowIsFloating">true
- "android:background">@color/teal_200
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