如何在Android中动态添加按钮？
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时间：2020-08-20 03:43:26 来源:igfitidea点击:
How to add a button dynamically in Android?
提问by deepthi
How to add a button dynamically in Android?
如何在Android中动态添加按钮？
回答by nico
回答by dicklaw795
try this:
尝试这个：
for (int i = 1; i <= 20; i++) {
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
Button btn = new Button(this);
btn.setId(i);
final int id_ = btn.getId();
btn.setText("button " + id_);
btn.setBackgroundColor(Color.rgb(70, 80, 90));
linear.addView(btn, params);
btn1 = ((Button) findViewById(id_));
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Toast.makeText(view.getContext(),
"Button clicked index = " + id_, Toast.LENGTH_SHORT)
.show();
}
});
}
回答by NuuoeiZ
Try this:
尝试这个：
LinearLayout ll = (LinearLayout)findViewById(R.id.layout);
Button btn = new Button(this);
btn.setText("Manual Add");
btn.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
ll.addView(btn);
回答by tilak
try this
尝试这个
private void createLayoutDynamically(int n) {
for (int i = 0; i < n; i++) {
Button myButton = new Button(this);
myButton.setText("Button :"+i);
myButton.setId(i);
final int id_ = myButton.getId();
LinearLayout layout = (LinearLayout) findViewById(R.id.myDynamicLayout);
layout.addView(myButton);
myButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Toast.makeText(DynamicLayout.this,
"Button clicked index = " + id_, Toast.LENGTH_SHORT)
.show();
}
});
}
回答by Harish Koona
for (int k = 1; k < 100; k++) {
TableRow row = new TableRow(this);
innerloop:
for (int l = 1; l < 4; l++) {
btn = new Button(this);
TableRow.LayoutParams tr = new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
layout.setWeightSum(12.0f);
tr.weight = 0;
btn.setLayoutParams(tr);
btn.setTextColor(a);
btn.setHeight(150);
btn.setWidth(150);
btn.setId(idb);
btn.setText("Button " + idb);
row.addView(btn);
}
}
回答by Mercy
Try this code
试试这个代码
Button btn=new Button(this);
btn.setId(btn);
btn.setBackgroundResource(R.drawable.image);
btn.setMinimumHeight(150);
btn.setMinimumWidth(150);
Relativelayout.addView(btn);
回答by Mercy
Try this code. It will work fine..
试试这个代码。它会工作得很好..
public class DynamicViewsActivity extends Activity {
Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_dynamic_views);
ScrollView scrl=new ScrollView(this);
final LinearLayout ll=new LinearLayout(this);
ll.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(100, 500, 100, 200);
scrl.addView(ll);
Button add_btn=new Button(this);
add_btn.setText("Click Here");
ll.addView(add_btn, layoutParams);
final Context context = this;
add_btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(context, App2Activity.class);
startActivity(intent);
}
});
this.setContentView(scrl);
}
}
回答by Ruchiran Avishka
Check this up.
检查一下。
LinearLayout ll_Main = new LinearLayout(getActivity());
LinearLayout ll_Row01 = new LinearLayout(getActivity());
LinearLayout ll_Row02 = new LinearLayout(getActivity());
ll_Main.setOrientation(LinearLayout.VERTICAL);
ll_Row01.setOrientation(LinearLayout.HORIZONTAL);
ll_Row02.setOrientation(LinearLayout.HORIZONTAL);
final Button button01 = new Button(getActivity());
final Button button02 = new Button(getActivity());
final Button button03 = new Button(getActivity());
final Button button04 = new Button(getActivity());
ll_Row01.addView(button01);
ll_Row01.addView(button02);
ll_Row02.addView(button03);
ll_Row02.addView(button04);
ll_Main.addView(ll_Row01);
ll_Main.addView(ll_Row02);
button04.setVisibility(View.INVISIBLE);
button04.setVisibility(View.VISIBLE);
回答by Mr.Sandy
Try following code.
尝试以下代码。
LinearLayout layout = (LinearLayout) findViewById(R.id.llayout);
layout.setOrientation(LinearLayout.VERTICAL);
Button btn = new Button(this);
btn.setText("Button1");
layout.add(btn);
btn = new Button(this);
btn.setText(Button2);
layout.add(btn);
like this you add Buttons as per your requirements.
像这样，您可以根据您的要求添加按钮。
回答by droidster.me
public void add_btn() {
lin_btn.setWeightSum(3f);
for (int j = 0; j < 3; j++) {
LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params1.setMargins(10, 0, 0, 10);
params1.weight = 1.0f;
LinearLayout ll;
ll = new LinearLayout(this);
ll.setGravity(Gravity.CENTER_VERTICAL);
ll.setOrientation(LinearLayout.HORIZONTAL);
ll.setLayoutParams(params1);
final Button btn;
btn = new Button(DynamicActivity.this);
btn.setText("A"+(j+1));
btn.setTextSize(15);
btn.setId(j);
btn.setPadding(10, 8, 10, 10);
ll.addView(btn);
lin_btn.addView(ll);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(v.getId()==0)
{
txt_text.setText("Hii");
}else if(v.getId()==1)
{
txt_text.setText("hello");
}else if(v.getId()==2)
{
txt_text.setText("how r u");
}
}
});
}
}
