保存EditText和TextView数据并将其显示在另一个活动中

Question

I'm developing an app which adds two numbers. The user provides the numbers via EditText and the result is displayed via TextView. What I want to do is to save the values of the numbers entered by the user and the result via button (to see them whenever the user wants) and display them in the layout of another activity (whithout EditText's). Remark that the user would be able to see the results saved whenever he/she wants.

Hope you can help me. Thank you so much.

Answer 1

From Your question what i understand ::

• Your first editText1 has value1

• Your second editText2 has value2

• textView1 has the result of value1 and value2

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Solution :: Get the values from the views and use intents to pass the data between activities

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Code ::

In your current Activity, create a new Intent: - OnCreate()

Intent i = new Intent(getApplicationContext(), NewActivity.class);
i.putExtra("editText1",editText1.getText());
i.putExtra("editText2",editText2.getText());
i.putExtra("textView1",textView1.getText());
startActivity(i);

Then in the new Activity, retrieve those values: - OnCreate()

Bundle extras = getIntent().getExtras();
if (extras != null) {
    String editText1= extras.getString("editText1");
    String editText2= extras.getString("editText2");
    String textView1= extras.getString("textView1");
}

Use the variables editText1 , editText2 and textView1 in second activity to set the values to any views as u wish

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HOPE THAT HELPS, let me know if you face any problems in debugging

Answer 2

make use of SharedPreferences like this:

SharedPreferences sp= getSharedPreferences("ttt", 0);

SharedPreferences.Editor editor = sp.edit();

String etValue=(EditText)findViewById(R.id.yourEditTextId).getText().toString();

String tvValue=(TextView)findViewById(R.id.yourTextView).getText().toString();

editor.putString("etValue", etValue);

editor.putString("tvValue", tvValue);

editor.commit();

// in anywhere user wants

SharedPreferences settings = getSharedPreferences("ttt", 0);

String yourEditTextValue=settings.getString("etValie", "");

String yourTextViewValue=settings.getString("tvValie", "");

Answer 3

There is multiple ways to achieve that :

Method 1: Use static class setter and getter method:

create static class and set values from first activity and get value from second activity

Method 2:

Post your values through the intent

Method 3:

Use database to store data from one activity and get data from other activity

Method 4:

Use Shared preference