当editText TextWatcher.OnTextChanged上的setText未调用时

Question

每当EditText字符串发生更改时，就会调用OnTextChanged。

现在，当我启动新的活动并通过bundle发送数据时，OnTextChanged不会被调用。

if( getIntent().getExtras() != null) {
    Bundle b = getIntent().getExtras();
    int value = -1;

    if(b != null)
        value = b.getInt("key");
    edit1.setText("Mywords:");
}

Answer 1

这是修改后的代码。其思想是在EditText上添加TextWatcher之后设置该文本。

if( getIntent().getExtras() != null) {
    Bundle b = getIntent().getExtras();
    int value = -1;

    if(b != null)
        value = b.getInt("key");

    // Add  the TextWatcher here
    edit1.addTextChangedListener(new TextWatcher() {
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            // Toast.makeText(MainActivity.this, "before text changed", Toast.LENGTH_LONG).show();
        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            // Toast.makeText(MainActivity.this, "on text changed", Toast.LENGTH_LONG).show();
        }

        @Override
        public void afterTextChanged(Editable s) {
            // Toast.makeText(MainActivity.this, "after text changed", Toast.LENGTH_LONG).show();
        }
    });

    // Now the set the value in your EditText
    edit1.setText("Mywords:");
}