Android，如何在 OnClick 中从 TextView 获取文本

Question

I have some TextView and each have an OnClickListener . I would like get information in this method to TextView

TextView tv2 = new TextView(this,(String)book.get(i),this);
tv2.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
        Intent intent = new Intent(Contact.this,Discution.class);
        //String str = this.getText(); //like this
        startActivity(intent);
    }
});

How can I do : this.getText(); in an OnClickListener ?

Answer 1

This is wrong

TextView tv2 = new TextView(this,(String)book.get(i),this);

You will need TextView to be final and the constructor should match any of the below

TextView(Context context)
TextView(Context context, AttributeSet attrs)
TextView(Context context, AttributeSet attrs, int defStyle)

It should be

final TextView tv2 = new TextView(this);

You are not using any of the above. Totally wrong

Then inside onClick

String str = tv2.getText().toString();  

Its declared final cause you access tv2 inside annonymous inner class.

http://docs.oracle.com/javase/tutorial/java/javaOO/anonymousclasses.html#accessing

You can also use the View v .

TextView tv = (TextView) v;
String str = tv.getText().toString();  

Answer 2

tv2.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
    Intent intent = new Intent(Contact.this,Discution.class);

            String str = tv2.getText().toString(); 

            startActivity(intent);
}

Answer 3

只需使用: tv2代替this 。

Answer 4

用这个

tv2.getText().toString;

Answer 5

Lets suppose you have this in your layout:

<TextView android:id           ="@+id/myText"
          android:layout_width ="wrap_content"
          android:layout_height="wrap_content"
          android:textSize     ="26dp"
          android:text         ="bla bla bla..."
          android:textColor    ="#0000ff"
          android:clickable    ="true"
          android:onClick      ="onMyClick"/>

Now lets get the text content from myText element when it gets clicked

public void onMyClick(View v)
     {
     TextView t=(TextView)v;
     String s=t.getText().toString();
     //do whatever you want with the string s
     }

Note the boolean android:clickable="true" on the layout element [ it's mandatory ]