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Merge pull request #2471 from WUJINH/master
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#3 #1307 第三次实验
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@zengsn
zengsn authored May 30, 2018
2 parents b903d56 + f4330fe commit 5851349
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12 changes: 10 additions & 2 deletions soft1614080902126/app/src/main/AndroidManifest.xml
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@@ -1,12 +1,16 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="edu.hzuapps.androidlabs.soft1614080902126">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".Soft1614080902126Activity">
Expand All @@ -16,6 +20,10 @@
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity" />
<activity android:name=".ThirdActivity" />
<activity android:name=".InternetThread" />
<activity android:name=".FinallyActivity"></activity>
</application>

</manifest>
112 changes: 112 additions & 0 deletions ...80902126/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902126/FinallyActivity.java
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package edu.hzuapps.androidlabs.soft1614080902126;

import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.os.*;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;


public class FinallyActivity extends AppCompatActivity {
private Handler handler=new Handler();
ImageView imageView;
private String url = "https://image.baidu.com/search/down?tn=download&word=download&ie=utf8&fr=detail&url=https%3A%2F%2Ftimgsa.baidu.com%2Ftimg%3Fimage%26quality%3D80%26size%3Db9999_10000%26sec%3D1527672511486%26di%3Da8cc5e41d36523997cfb9b3c615b79f2%26imgtype%3D0%26src%3Dhttp%253A%252F%252Fpic28.nipic.com%252F20130417%252F12389388_002915416000_2.png&thumburl=https%3A%2F%2Fss0.bdstatic.com%2F70cFuHSh_Q1YnxGkpoWK1HF6hhy%2Fit%2Fu%3D529587146%2C4023250194%26fm%3D27%26gp%3D0.jpg";
Bitmap bmImg;

//在消息队列中实现对控件的更改
private Handler handle = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case 0:
System.out.println("111");
Bitmap bmp=(Bitmap)msg.obj;
imageView.setImageBitmap(bmp);
break;
}
};
};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_finally);
imageView = (ImageView) findViewById(R.id.my_view);
Button btn=(Button) findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
//新建线程加载图片信息，发送到消息队列中
new Thread(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub
Bitmap bmp = getURLimage(url);
Message msg = new Message();
msg.what = 0;
msg.obj = bmp;
System.out.println("000");
handle.sendMessage(msg);
}
}).start();
}
});
}


//加载图片
public Bitmap getURLimage(String url) {
Bitmap bmp = null;
try {
URL myurl = new URL(url);
// 获得连接
HttpURLConnection conn = (HttpURLConnection) myurl.openConnection();
conn.setConnectTimeout(6000);//设置超时
conn.setDoInput(true);
conn.setUseCaches(false);//不缓存
conn.connect();
InputStream is = conn.getInputStream();//获得图片的数据流
bmp = BitmapFactory.decodeStream(is);
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return bmp;
}
//
// public Bitmap returnBitMap(String url) {
// URL myFileUrl = null;
// Bitmap bitmap = null;
// try {
// myFileUrl = new URL(url);
// } catch (MalformedURLException e) {
// e.printStackTrace();
// }
// try {
// HttpURLConnection conn = (HttpURLConnection) myFileUrl.openConnection();
// conn.setDoInput(true);
// conn.connect();
// InputStream is = conn.getInputStream();
// bitmap = BitmapFactory.decodeStream(is);
// is.close();
// } catch (IOException e) {
// e.printStackTrace();
// }
// return bitmap;
// }


}
67 changes: 67 additions & 0 deletions ...080902126/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902126/InternetThread.java
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package edu.hzuapps.androidlabs.soft1614080902126;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.os.Handler;
import android.widget.ImageView;
import android.content.Context;
import android.os.Environment;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;


public class InternetThread extends Thread {
private String url;
private ImageView imageView;
private Handler handler;
public InternetThread(String url, ImageView imageView, Handler handler){
this.url=url;
this.imageView=imageView;
this.handler=handler;
}
@Override
public void run(){
try {
URL httpUrl=new URL(url);
HttpURLConnection conn=(HttpURLConnection)httpUrl.openConnection();
conn.setReadTimeout(5000);
conn.setRequestMethod("GET");
conn.setDoInput(true);
InputStream in=conn.getInputStream();
FileOutputStream out=null;
File downloadFile=null;
String fileName=String.valueOf(System.currentTimeMillis());
String storePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "demo";
File appDir = new File(storePath);

if (!appDir.exists()) {
appDir.mkdir(); }
downloadFile=new File(appDir,fileName);
out=new FileOutputStream(downloadFile);

byte [] b=new byte[4*1024];
int len;
if(out!=null) {
while ((len = in.read(b)) != -1) {
out.write(b,0,len);
}
}
final Bitmap bitmap= BitmapFactory.decodeFile(downloadFile.getAbsolutePath());
handler.post(new Runnable() {
@Override
public void run() {
imageView.setImageBitmap(bitmap);
}
});
} catch (java.io.IOException e) {
e.printStackTrace();
}
}
}
109 changes: 109 additions & 0 deletions ...080902126/app/src/main/java/edu/hzuapps/androidlabs/soft1614080902126/SecondActivity.java
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package edu.hzuapps.androidlabs.soft1614080902126;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class SecondActivity extends Activity {
private TextView mint;
private TextView sec;
private Button start;
private Button reset;
private long timeusedinsec;
private boolean isstop = false;
private Handler mHandler = new Handler() {
/*
* edit by yuanjingchao 2014-08-04 19:10
*/
@Override
public void handleMessage(Message msg) {
// TODO Auto-generated method stub
super.handleMessage(msg);
switch (msg.what) {
case 1:
// 添加更新ui的代码
if (!isstop) {
updateView();
mHandler.sendEmptyMessageDelayed(1, 1000);
}
break;
case 0:
break;
}
}

};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
initViews();

Button button2=(Button)findViewById(R.id.button_2);
button2.setOnClickListener(new View.OnClickListener(){

public void onClick(View v){
Intent intent=new Intent(SecondActivity.this,ThirdActivity.class);
startActivity(intent);
}
});
}
private void initViews() {
mint = (TextView) findViewById(R.id.mint);
sec = (TextView) findViewById(R.id.sec);
reset = (Button) findViewById(R.id.reset);
start = (Button) findViewById(R.id.start);
reset.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub

mint.setText("00");
sec.setText("00");
start.setText("start");
timeusedinsec=0;
isstop=true;
}
});
start.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
mHandler.removeMessages(1);
String aaa=start.getText().toString();
if(aaa.equals("开始学习")){
mHandler.sendEmptyMessage(1);
isstop = false;
start.setText("暂停");
}else {
mHandler.sendEmptyMessage(0);
isstop = true;
start.setText("开始学习");
}

}
});
}
private void updateView() {
timeusedinsec += 1;
int minute = (int) (timeusedinsec / 60)%60;
int second = (int) (timeusedinsec % 60);
if (minute < 10)
mint.setText("0" + minute);
else
mint.setText("" + minute);
if (second < 10)
sec.setText("0" + second);
else
sec.setText("" + second);
}

}
29 changes: 27 additions & 2 deletions ...pp/src/main/java/edu/hzuapps/androidlabs/soft1614080902126/Soft1614080902126Activity.java
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package edu.hzuapps.androidlabs.soft1614080902126;

public class Soft1614080902126Activity{
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

}
public class Soft1614080902126Activity extends AppCompatActivity{

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_soft1614080902126);
Button button1=(Button)findViewById(R.id.button_1);
button1.setOnClickListener(new View.OnClickListener(){

public void onClick(View v){
Intent intent=new Intent(Soft1614080902126Activity.this,SecondActivity.class);
startActivity(intent);
}
});



}



}
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