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在活動中,我有兩個文本視圖。在上下文菜單中,我可以選擇更改其中一個文本視圖的文本大小。我試過這樣的事情..Android AlertDialog在contextmenu中動態更改textSize
public boolean onOptionsItemSelected(MenuItem item){
switch (item.getItemId()){
case R.id.menutextSize:
final CharSequence[] items = {"Normal","Large","Larger"};
AlertDialog.Builder builder = new
AlertDialog.Builder(this);
builder.setTitle("Select TextSize");
builder.setSingleChoiceItems(items, -1,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(getApplicationContext(), items[item],
Toast.LENGTH_SHORT).show();
}
});
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
int textSize = (int)mBodyText.getTextSize();
if (items[whichButton] == "Normal")
{
mTextv.setTextSize(12);
}
if (items[whichButton] == "Large")
{
mTextv.setTextSize(14);
}
if (items[whichButton] == "Larger")
{
mTextv.setTextSize(16);
}
}
});
builder.setNegativeButton("cancel", null);
builder.show();
return true;
}
當我在顯示「強制關閉」消息時,在單選按鈕中出現問題。我該如何解決這個問題? 謝謝..