Android ch4 12 執行進度對話元件

[Android]_ch4.12_執行進度對話元件



package com.derek.ch15_progessdialog;



import android.R.integer;

import android.app.Activity;

import android.app.Dialog;

import android.app.ProgressDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;





public class MainActivity extends Activity {

Button btn1;

TextView tv1;

Handler handler;

ProgressDialog pDialog;

int p=0;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        tv1=(TextView)findViewById(R.id.textView1);

        btn1=(Button)findViewById(R.id.button1);

        handler=new Handler(){

@Override

public void handleMessage(Message msg) {

if(p>=100){

pDialog.dismiss();

tv1.setText("下載完成...");

}else{

p++;

pDialog.incrementProgressBy(2);

handler.sendEmptyMessageDelayed(0, 200);

tv1.setText("下載進度..."+pDialog.getProgress()+"%");

}

}};

       

        btn1.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

showDialog(0);

pDialog.setProgress(0);

handler.sendEmptyMessage(0);

p=0;

}

});

    }

@Override

@Deprecated

protected Dialog onCreateDialog(int id) {

switch(id){

case 0:

pDialog=new ProgressDialog(MainActivity.this);

pDialog.setTitle("下載檔案");

pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

pDialog.setButton(DialogInterface.BUTTON_POSITIVE,"隱藏", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Toast.makeText(MainActivity.this, "隱藏下載對話方塊", Toast.LENGTH_SHORT).show();

}

});

pDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "取消", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

Toast.makeText(MainActivity.this, "取消下載", Toast.LENGTH_SHORT).show();

}

});

return pDialog;





}

return super.onCreateDialog(id);

}

   

}