看代码学Android ：如何判断SD卡是否可用?

zdwang

1. package com.test;
   
2. 
   
3. //import java.net.URISyntaxException;
   
4. 
   
5. import android.app.Activity;
   
6. import android.os.Bundle;
   
7. import android.os.Environment;
   
8. //import android.util.Log;
   
9. import android.view.View;
   
10. import android.widget.Button;
    
11. import android.widget.Toast;
    
12. 
    
13. public class TestActivity1 extends Activity {
    
14.     /** Called when the activity is first created. */
    
15.     @Override
    
16.     public void onCreate(Bundle savedInstanceState) {
    
17.         super.onCreate(savedInstanceState);
    
18.         setContentView(R.layout.main);
    
19. 
    
20.         Button btn = (Button) this.findViewById(R.id.button1);
    
21.         btn.setOnClickListener(new View.OnClickListener() {
    
22.             public void onClick(View v) {                
    
23.                 
    
24.                 // SD Card Ready
    
25.                 if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
    
26.                     
    
27.                     Toast.makeText(getApplicationContext(), "SD Card Ready! Enjoy it!",
    
28.                          Toast.LENGTH_LONG).show();
    
29.                 }
    
30.                 else{
    
31.                     Toast.makeText(getApplicationContext(), "SD Card NOT Ready! Please insert it, try it agian!",
    
32.                          Toast.LENGTH_LONG).show();
    
33.                 }
    
34.                     
    
35.             }
    
36.         });
    
37.     }
    
38. }