如何在Android中动态添加按钮？

Question

如何在Android中动态添加按钮？

Answer 1

Button myButton = new Button(this);
myButton.setText("Push Me");

LinearLayout ll = (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
ll.addView(myButton, lp);

看看这个例子

Answer 2

试试这个:

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();
        }
    });
}

Answer 3

试试这个:

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);

Answer 4

试试这个

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();
            }
        });
    }

Answer 5

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);
    }
}

Answer 6

Button btn = new Button(this);
btn.setText("Submit");
LinearLayout linearLayout = (LinearLayout)findViewById(R.id.buttonlayout);
LayoutParams buttonlayout = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
linearLayout.addView(btn, buttonlayout);

Answer 7

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); 

Answer 8

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);