我编写代码来生成动态按钮,但我不知道如何动态地为每个按钮实现click事件。我找到了一些答案,但没有使用我的代码......请帮帮我.. 这是我的代码
public class dynamicbuttion extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ScrollView sv = new ScrollView(this);
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
sv.addView(ll);
for(int i = 0; i < 5; i++) {
Button btn = new Button(this);
btn.setId(i);
btn.setText("dynamic buttion " + i);
ll.addView(btn);
}
this.setContentView(sv);
}
}
答案 0 :(得分:4)
Button[] btn = new Button[5];
for(int i = 0; i < 5; i++) {
btn[i] = new Button(this);
btn[i].setId(i);
btn[i].setText("dynamic buttion " + i);
ll.addView(btn[i]);
btn[i].setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//your desired functionality
}
});
}
答案 1 :(得分:4)
我使用自定义布局:
完成了private LinearLayout linearLayoutParent;
<强>的onCreate 强>:
linearLayoutParent = (LinearLayout)findViewById(R.id.linearLayoutParent);
现在,只要需要创建动态文字视图,我们就会添加父线性布局:
TextView[] name = new TextView[10];
for (int i = 0; i < 10; i++) {
View view = getLayoutInflater().inflate(R.layout.child_view, linearLayoutParent, false);
name[i] = (TextView) view.findViewById(R.id.child_name);
name[i].setText("Dynamic Textxview " + i);
name[i].setId(i);
name[i].setTag(String.valueOf(i));
ll.addView(view);
name[i].setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Log.i("Clicked", ""+v.getTag());
}
});
}
<强> child_view.xml 强>:
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/child_name"
android:layout_width="120dp"
android:layout_height="50dp"
android:background="#969696"
android:gravity="center"
android:text=""
android:textColor="#fff"
android:textSize="16sp" />
希望这会对你有所帮助。
答案 2 :(得分:0)
使用匿名的OnClickListener实现。像这样:
btn.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
doThisWhenClicked();
}
});
答案 3 :(得分:0)
public class DynamicButton extends Activity {
private LinearLayout ll;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dynic_button);
ll = (LinearLayout) findViewById(R.id.llContent);
Button[] dynamic_button = new Button[10];
for (int i = 0; i < 10; i++) {
dynamic_button[i] = new Button(this);
dynamic_button[i].setId(i);
dynamic_button[i].setTag("" + i);
dynamic_button[i].setText("My Dynamic Button No: " + i);
ll.addView(dynamic_button[i]);
dynamic_button[i].setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Log.i("Clicked", "" + v.getTag());
}
});
}
}
}
答案 4 :(得分:0)
对于动态需求列表将是最佳选择,此外,您可以为动态绘图增加XML视图
try {
int brotherCount =5;
List<View> dynamicView = new ArrayList<>();
List<TextInputEditText> dynamicBrotherText = new ArrayList<>();
List<TextInputLayout> dynamicLayoutBrother = new ArrayList<>();
for(int i=1;i<=brotherCount;i++){
View family_static = getLayoutInflater()
.inflate(R.layout.my_family_static, mLayoutBrother, false);
TextInputEditText inputEditText=family_static.findViewById(R.id.TextInputEditTextFather);
TextInputLayout inputLayout=family_static.findViewById(R.id.TextInputLayoutFamily);
inputEditText.setText("name"+i);
inputLayout.setHint(getResources().getString(R.string.about_my_brother));
dynamicBrotherText.add(inputEditText);
dynamicLayoutBrother.add(inputLayout);
dynamicView.add(family_static);
mLayoutBrother.addView(family_static);
}
for(View view :dynamicBrotherText){
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showToast(((TextInputEditText)view).getText().toString());
}
});
}
} catch (Exception e) {
e.printStackTrace();
Log.d("", "createBrotherLayout: ");
}
答案 5 :(得分:0)
我知道这篇文章很旧,但我最终在这里寻找答案,最终阅读了 setTag()
方法,它解决了我的问题。现在,我想添加一个我觉得比添加 setOnClickListener()
更简洁的答案,它看起来像这样:
public void createButtonList(HashMap<String, Integer> buttonList){
LinearLayout buttonLayout = findViewById(R.id.btnlyt);
for (Map.Entry<String, Integer> entry : buttonList.entrySet()) {
String key = entry.getKey();
Button button = new Button(this);
button.setText(key);
button.setTextSize(27);
button.setTextColor(Color.rgb(150, 190, 200));
button.setTypeface(Typeface.MONOSPACE);
button.setTag(key);
buttonLayout.addView(button);
button.setOnClickListener(this);
}
}
@Override
public void onClick(View view) {
String clickedButton = view.getTag().toString();
}
所以在我的情况下,我有一个 HashMap,其中包含有关我想要在按钮上的文本的信息,这里重要的是 button.setOnClickListener(this);
并且也非常重要,在创建类时添加 implements View.OnClickListener
它看起来像这个:
public class ClassName extends AppCompatActivity implements View.OnClickListener