Question

我有3个EditText。当我输入一些文本或一些数字然后单击保存按钮它会转到另一个活动。再次回到editText，值消失并设置为android：text =“value”。我需要在输入editText框后显示值。

代码：

et=(EditText)findViewById(R.id.pieces);

        et1=(EditText)findViewById(R.id.portions);

        et2=(EditText)findViewById(R.id.ml);

        save=(Button)findViewById(R.id.submit_data);

save.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                SharedPreferences preferences = getApplicationContext().getSharedPreferences(PREFS_NAME, 0);

             SharedPreferences.Editor editor = preferences.edit();
                editor.putString("text1",pieces.getText().toString());
                editor.putString("text2",portions.getText().toString());
                editor.putString("text3",ml.getText().toString());

                editor.commit();



            String oneedit= preferences .getString("text1", "");
            String  twoedit= preferences .getString("text2", "" );
            String  thirdedit= preferences .getString("text3", "" );


            pieces.setText(oneedit);
            portions.setText(twoedit);
            ml.setText(thirdedit);

            /*
         SharedPreferences.Editor editor = preferences.edit();
            editor.putString("text1",pieces.getText().toString());
            editor.putString("text2",portions.getText().toString());
            editor.putString("text3",ml.getText().toString());

            editor.commit();


                Intent intent=new Intent(Activity.this,Activity1.class);
                startActivity(intent);

            }

    });

如果我使用下面的代码，它会加载保存的值：

edit.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                SharedPreferences preferences = getSharedPreferences(PREFS_NAME, 0);

                //edittext.setText(sharedpreference.getString(KEYNAME, "No value Stored"));

                et.setText(preferences.getString("text1", " "));
                et1.setText(preferences.getString("text2", " "));
                et2.setText(preferences.getString("text3", " "));

            }


        });

Answer 1

尝试这一行我们在create method上调用并使用整个活动

  SharedPreferences = getApplicationContext().getSharedPreferences("MyPref", 0);

save.setOnClickListener（）

   save.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub


           SharedPreferences.Editor editor = SharedPreferences .edit();
            editor.putString("text1",et.getText().toString());
            editor.putString("text2",e1t.getText().toString());
            editor.putString("text3",et2.getText().toString());

            editor.commit();

              et.setText("");
         et1.setText("");
         et2.setText("");  
       }
});

这是onClick方法

     edit.setOnClickListener(new OnClickListener(){

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub               

         String oneedit= SharedPreferences .getString("text1", null);
         String twoedit= SharedPreferences .getString("text2", null );
         String threeedit= SharedPreferences .getString("text3", null );

         et.setText(oneedit);
         et1.setText(twoedit);
         et2.setText(threeedit);     

        }
    });

显示editText值sharedpreference save

1 个答案: