安卓在Oncrate里面用litepal读取数据库 程序会闪退

Question

我在就定义了两个editext一个textview一个button

   protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.first_layout);
        editText = (EditText)findViewById(R.id.edit);
        editText1=(EditText)findViewById(R.id.edit1);
        textView = (TextView)findViewById(R.id.text);
        Button button =(Button)findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Course course = new Course();
                course.setI(editText.getText().toString());
                course.setJ(editText1.getText().toString());
                course.save();
            }
        });
        List<Course> courses = DataSupport.findAll(Course.class);
        for (Course i:courses){
            textView.setText(i.getI()+"   "+i.getJ()+"\n");
        }

    }

Answer 1

你程序闪退的日志也贴出来。