我的应用程序由于未初始化视图而崩溃 [英] My application got crashed because of not initializing the view

问题描述

在这里，我正在尝试调用setText方法，但是由于某些初始化问题，我的应用程序崩溃了.

Here, i am trying to call setText method but my application is getting crashed because of some initialization problem.

EditText edittext;
    SharedPreferences settings;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        image =(ImageView) findViewById(R.id.imageView1);
        image.setImageResource(R.drawable.logo);
        settings= getSharedPreferences(PREFS_NAME,Context.MODE_PRIVATE);
        if(settings.contains("sharedString")){
        String returnString=settings.getString("sharedString","Couldn't load the data");
        edittext.setText(returnString);
        }

    }

推荐答案

edittext 未初始化.在 onCreate 中对其进行初始化.

edittext is not initialized. Initialize it in onCreate.

在 onCreate 中，您拥有

edittext.setText(returnString); // not initialized in onCreate

你有

edittext =(EditText)findViewById(R.id.edit_message); // initialized in sendMessage

在 sendMessage 中.因此，您甚至可能在初始化之前将文本设置为edittext

in sendMessage. So you may be setting text to edittext even before it is initialized

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