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當(dāng)前位置：首頁(yè) > 嵌入式培訓(xùn) > 嵌入式學(xué)習(xí) > 講師博文 > 掌握Android對(duì)話框

掌握Android對(duì)話框時(shí)間：2018-09-29 來源：未知

一.目標(biāo)

1. 使用ProgressDialog.show()方式創(chuàng)建對(duì)話框

2. 使用new PorgressDialog(context)方式創(chuàng)建對(duì)話框

二. 過程

1. 使用ProgressDialog.show(....)方式創(chuàng)建對(duì)話框

（1）方式1

// 方式1 使用靜態(tài)方式創(chuàng)建并顯示，這種進(jìn)度條只能是圓形條,這里后一個(gè)參數(shù)設(shè)置是否進(jìn)度條是可以取消的
ProgressDialog dialog4 = ProgressDialog.show(this, "提示", "正在登陸中", false, true);

（2）方式2

DialogInterface.OnCancelListener cancelListener = new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
        Toast.makeText(MainActivity.this, "進(jìn)度條被取消", Toast.LENGTH_LONG).show();
    }
};
// cancelListener用于監(jiān)聽進(jìn)度條被取消
ProgressDialog dialog5 = ProgressDialog.show(this, "提示", "正在登陸中", fasle, true, cancelListener);

2. 創(chuàng)建new PorgressDialog(context)方式創(chuàng)建對(duì)話框

(方式一)創(chuàng)建圓形進(jìn)度條對(duì)話框

ProgressDialog dialog = new ProgressDialog(this);
dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);// 設(shè)置圓形轉(zhuǎn)動(dòng)進(jìn)度條
dialog.setMessage("正在下載...");
dialog.show();

（方式二）創(chuàng)建條形進(jìn)度條對(duì)話框

final ProgressDialog dialog = new ProgressDialog(this);
dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);// 設(shè)置圓形轉(zhuǎn)動(dòng)進(jìn)度條
dialog.setMax(100);//設(shè)置總進(jìn)度
dialog.setProgress(0);//設(shè)置當(dāng)前進(jìn)度0
// dialog.setSecondaryProgress(0);//設(shè)置二級(jí)進(jìn)度
// dialog.incrementProgressBy(0);//設(shè)置進(jìn)度在以前基礎(chǔ)上追加多少    設(shè)置一級(jí)進(jìn)度
// dialog.incrementSecondaryProgressBy(0);//設(shè)置二級(jí)進(jìn)度
dialog.setMessage("正在下載...");
dialog.setCancelable(false);
dialog.show();

示例：

/layout/activity_main.xml

?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
xmlns:tools="//schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="test.act.MainActivity"
android:orientation="vertical"
>
    <Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="showpd1"
android:text="showpd1" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="showpd5"
android:text="showpd5" />
</LinearLayout>
//MainActivity.java
package test.act;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
private Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
public void showpd1(View v) {
        ProgressDialog.show(this, "提示", "正在登陸中", false, true);
    }
public void showpd2(View v) {
final ProgressDialog dialog = ProgressDialog.show(this, "提示", "正在下載", false, false, new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
                Toast.makeText(MainActivity.this, "下載完畢", Toast.LENGTH_LONG).show();
            }
        });
new Thread() {
@Override
public void run() {
try {
                    Thread.sleep(4000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
dialog.cancel();
            }
        }.start();

}
public void showpd3(View v) {
        ProgressDialog dialog = new ProgressDialog(this);
        dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);// 設(shè)置圓形轉(zhuǎn)動(dòng)進(jìn)度條
dialog.setMessage("正在下載...");
//        dialog.setCancelable(false);//設(shè)置點(diǎn)擊外圍對(duì)象不銷毀
dialog.show();
//        dialog.cancel();//銷毀對(duì)話框
}
public void showpd4(View v) {
final ProgressDialog dialog = new ProgressDialog(this);
        dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);// 設(shè)置圓形轉(zhuǎn)動(dòng)進(jìn)度條
dialog.setMax(100);//設(shè)置總進(jìn)度
dialog.setProgress(0);//設(shè)置當(dāng)前進(jìn)度0
       // dialog.setSecondaryProgress(0);//設(shè)置二級(jí)進(jìn)度
       // dialog.incrementProgressBy(0);//設(shè)置進(jìn)度在以前基礎(chǔ)上追加多少    設(shè)置一級(jí)進(jìn)度
       // dialog.incrementSecondaryProgressBy(0);//設(shè)置二級(jí)進(jìn)度
dialog.setMessage("正在下載...");
        dialog.setCancelable(false);
        dialog.show();

handler = new Handler() {
@Override
public void handleMessage(Message msg) {//UI線程
int progress = msg.arg1;//取出進(jìn)度
dialog.setProgress(progress);
if(progress >= 100) {
dialog.cancel();
                }
            }
        };

new Thread() {
private int progress = 0;//文件下載到百分之多少
@Override
public void run() {//子線程
while (true) {
try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
progress = progress + 5;
                    Message msg = handler.obtainMessage();
                    msg.arg1 = progress;
handler.sendMessage(msg);
if(progress >=100) {
return;
                    }
                }
            }
        }.start();
    }
public void showpd5(View v) {
    }
}

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