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122 changes: 98 additions & 24 deletions
122
...4/2.app/2.app/src/main/java/edu/hzupps/androidlabs/soft1614080902434/Second_Activity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,44 +1,118 @@ | ||
| package soft1614080902434.androidlabs.hzuapps.edu.soft1614080902434; | ||
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| import android.content.Context; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.BitmapFactory; | ||
| import android.os.Environment; | ||
| import android.os.Handler; | ||
| import android.os.Message; | ||
| import android.support.annotation.RequiresPermission; | ||
| import android.support.v7.app.AppCompatActivity; | ||
| import android.os.Bundle; | ||
| import android.util.Log; | ||
| import android.view.View; | ||
| import android.widget.Button; | ||
| import android.widget.EditText; | ||
| import android.widget.ImageView; | ||
| import android.widget.TextView; | ||
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| import java.io.BufferedWriter; | ||
| import java.io.File; | ||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStreamWriter; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URL; | ||
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| public class Second_Activity extends AppCompatActivity implements View.OnClickListener { | ||
| TextView t[] = new TextView[12]; | ||
| EditText ed; | ||
| Button send,down; | ||
| public TextView text; | ||
| private ImageView imageview; | ||
| private Bitmap bitmap; | ||
| Handler handler=new Handler(){ | ||
| public void handleMessage(Message msg) { | ||
| if(msg.what==123){ | ||
| imageview.setImageBitmap(bitmap); | ||
| } | ||
| }; | ||
| }; | ||
| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_second_); | ||
| this.RegisterEcent(); | ||
| } | ||
| public void RegisterEcent(){ | ||
| t[0]=(TextView) findViewById(R.id.n_0); | ||
| t[1]=(TextView) findViewById(R.id.n_1); | ||
| t[2]=(TextView) findViewById(R.id.n_2); | ||
| t[3]=(TextView) findViewById(R.id.n_3); | ||
| t[4]=(TextView) findViewById(R.id.n_4); | ||
| t[5]=(TextView) findViewById(R.id.n_5); | ||
| t[6]=(TextView) findViewById(R.id.n_6); | ||
| t[7]=(TextView) findViewById(R.id.n_7); | ||
| t[8]=(TextView) findViewById(R.id.n_8); | ||
| t[9]=(TextView) findViewById(R.id.n_9); | ||
| t[10]=(TextView) findViewById(R.id.n_10); | ||
| t[11]=(TextView) findViewById(R.id.n_11); | ||
| t[12]=(TextView) findViewById(R.id.n_12); | ||
| t[13]=(TextView) findViewById(R.id.n_13); | ||
| t[14]=(TextView) findViewById(R.id.n_14); | ||
| t[15]=(TextView) findViewById(R.id.n_15); | ||
| t[16]=(TextView) findViewById(R.id.n_16); | ||
| for(int i=0;i<17;i++){ | ||
| t[i].setOnClickListener(this); | ||
| } | ||
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| down = (Button)findViewById(R.id.Down); | ||
| down.setOnClickListener(this); | ||
| imageview=(ImageView) findViewById(R.id.image); | ||
| text = (TextView)findViewById(R.id.address); | ||
| ed = (EditText)findViewById(R.id.edit_text); | ||
| send = (Button)findViewById(R.id.n_12); | ||
| send.setOnClickListener(this); | ||
| Log.d("dd","789"); | ||
| } | ||
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| @Override | ||
| public void onClick(View v) { | ||
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| public void save(String str){ | ||
| String data=str; | ||
| FileOutputStream out=null; | ||
| BufferedWriter writer=null; | ||
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| try{ | ||
| out =openFileOutput("wechat", Context.MODE_PRIVATE); | ||
| writer=new BufferedWriter(new OutputStreamWriter(out)); | ||
| Log.d("dd","456"); | ||
| writer.write(data); | ||
| } catch(IOException e){ | ||
| e.printStackTrace(); | ||
| } finally { | ||
| if (writer !=null){ | ||
| try { | ||
| writer.close(); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| @Override | ||
| public void onClick(View view){ | ||
| if(view==send) { | ||
| String str = ed.getText().toString(); | ||
| this.save(str); | ||
| Log.d("dd", "123"); | ||
| } | ||
| if(view==down){ | ||
| new Thread(download).start(); | ||
| } | ||
| } | ||
| Thread download = new Thread(){ | ||
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| public void run() { | ||
| String Path=text.getText().toString();//下载图片的路径 | ||
| try { | ||
| URL url=new URL(Path);//对资源链接 | ||
| InputStream inputStream=url.openStream(); | ||
| bitmap= BitmapFactory.decodeStream(inputStream);//转换成位图图片 | ||
| handler.sendEmptyMessage(123); | ||
| inputStream.close(); | ||
| inputStream=url.openStream(); | ||
| File file=new File(Environment.getExternalStorageDirectory()+"./DCIM/wechat.jpg"); | ||
| FileOutputStream fileOutputStream=new FileOutputStream(file); | ||
| int hasRead=0; | ||
| while((hasRead=inputStream.read())!=-1){ | ||
| fileOutputStream.write(hasRead); | ||
| } | ||
| fileOutputStream.close(); | ||
| inputStream.close(); | ||
| } catch (MalformedURLException e) { | ||
| e.printStackTrace(); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,27 @@ | ||
| # 第五次实验 | ||
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| ## 1.实验目的 | ||
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| Android存储编程 | ||
| ## 2.实验步骤 | ||
| 1.打开实验4的工程项目，我要存储发送出去的数据，我做的是内部存储。 | ||
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| 2.用到两个关键字： FileOutputStream和BufferedWriter writer。 | ||
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| 3.把按钮“发送”作为监听器，当你写上一些数据时，然后点击“发送”，系统此时就自动存储数据. | ||
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| 4.运行程序，然后从Android上面一排的View-Tool Windows-Device File Explorer，在这里找到soft1614080902434里面的File。 | ||
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| 5.git push.并pull request. | ||
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| ## 3.实验结果 | ||
| 运行截图： | ||
|  | ||
|  | ||
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| ## 4.实验心得 | ||
| 这次实验还是比较难，因为我对存储文件很陌生，然后，我查看了一些课外书，找到了一些方法，一开始我运行之后，发现存储不了，找不到原因，然后就在别人的电脑运行，结果可以，然后我回到自己的电脑运行，结果可以了，这个，我学到了一点存储的方法。 | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,27 @@ | ||
| # 实验6 | ||
| ## 一、实验目的 | ||
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| 掌握Android网络访问方法。 | ||
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| ## 二、实验内容 | ||
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| 从百度上寻找一张网址以后缀名为.jpg的图片，把图片的网址放到activity_second_xml文件中。 | ||
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| ## 三、实验步骤 | ||
| 1.AndroidManifest.xml中添加能够写入读出内存空间权限和网络连接权限的代码。 | ||
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| 2.然后在activity_second_xml中添加一个新的按钮和一个TextView，是用来显示图片的,按钮用来监听。 | ||
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| 3.在Second_Activity中写一个线程函数，用来管理下载和显示的图片。 | ||
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| 4.编译运行，然后push。 | ||
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| ## 四.实验截图 | ||
|  | ||
|  | ||
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| ## 五.实验心得 | ||
| 这次实验主要从网上找图片，然后放到我写的app中，我点击图片按钮的时候，发现没变化，看了一下，原来没开网，同时遇到了线程的函数，我不会，只能上网找资料以及求助同学了，同时注意的是还要给网络连接权限以及空间权限才能下载图片。 | ||
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