爲什麼非法的參數異常？

Question

不知道爲什麼得到錯誤的參數異常崩潰的android代碼。 任何幫助將不勝感激....

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    TextView tv=(TextView)findViewById(R.id.test_id); tv.append("\n"); 
    Uri u=Uri.parse("content://sms/inbox"); 
    try{ 
     Toast.makeText(this, getContentResolver().delete(u, "_id like ?", new String[]{"2"})+"", Toast.LENGTH_LONG).show(); 
    }catch(Exception e){ 
     Toast.makeText(this, e.toString(), Toast.LENGTH_LONG).show(); 
    } 
} 

Answer 1

我認爲像只能用字符串

Toast.makeText(this, getContentResolver().delete(u, "_id = ?", 
        new String[]{"2"})+"", Toast.LENGTH_LONG).show(); 

Answer 2

的刪除URI中使用的 「內容：//短信/」 + ID;

Cursor c = getApplicationContext().getContentResolver().query(Uri.parse("content://sms/inbox"), null, null, null,null); 
try { 
     while (c.moveToNext()) { 
     int id = c.getInt(0); 
     getApplicationContext().getContentResolver().delete(Uri.parse("content://sms/" + id), null, null); 
     } 

    }catch(Exception e){ 
     Log.e(this.toString(),"Error deleting sms",e); 
    }finally { 
     c.close(); 
    }