[英]Setting text to a custom dialog class
我试图建立一个自定义对话框,该对话框动态设置文本。 这是我的代码抛出NullPointerException
。 更新代码
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
HomeItem homeItem = (HomeItem) adapter.getItem(position);
final Dialog dialog = new Dialog(databaseFightCard.this, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
WindowManager.LayoutParams lp = (dialog.getWindow().getAttributes());
lp.dimAmount = 0.5f;
dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
Window window = dialog.getWindow();
window.setGravity(Gravity.CENTER);
dialog.setContentView(R.layout.custom_dialog);
LayoutInflater inflater = (LayoutInflater) databaseFightCard.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
RelativeLayout relative = (RelativeLayout) inflater.inflate(R.layout.custom_dialog, null, false);
Button play = (Button) findViewById(R.id.bPlay);
Button done = (Button) findViewById(R.id.bDone);
TextView rn = (TextView) findViewById(R.id.tvRName);
TextView ra = (TextView) findViewById(R.id.tvRAge);
TextView rr = (TextView) findViewById(R.id.tvRRecord);
TextView rh = (TextView) findViewById(R.id.tvRHeight);
TextView rw = (TextView) findViewById(R.id.tvRWeight);
TextView rc = (TextView) findViewById(R.id.tvRCity);
TextView re = (TextView) findViewById(R.id.tvRExp);
TextView bn = (TextView) findViewById(R.id.tvBName);
TextView ba = (TextView) findViewById(R.id.tvBAge);
TextView br = (TextView) findViewById(R.id.tvBRecord);
TextView bh = (TextView) findViewById(R.id.tvBHeight);
TextView bw = (TextView) findViewById(R.id.tvBWeight);
TextView bc = (TextView) findViewById(R.id.tvBCity);
TextView be = (TextView) findViewById(R.id.tvBExp);
rn.setText(homeItem.getHomeItemRedName()+"");
ra.setText(homeItem.getHomeItemRedAge()+"");
rr.setText(homeItem.getHomeItemRedRecord()+"");
rh.setText(homeItem.getHomeItemRedHeight()+"");
rw.setText(homeItem.getHomeItemRedWeight()+"");
rc.setText(homeItem.getHomeItemRedCity()+"");
re.setText(homeItem.getHomeItemRedExp()+"");
bn.setText(homeItem.getHomeItemBlueName()+"");
ba.setText(homeItem.getHomeItemBlueAge()+"");
br.setText(homeItem.getHomeItemBlueRecord()+"");
bh.setText(homeItem.getHomeItemBlueHeight()+"");
bw.setText(homeItem.getHomeItemBlueWeight()+"");
bc.setText(homeItem.getHomeItemBlueCity()+"");
be.setText(homeItem.getHomeItemBlueExp()+"");
dialog.setContentView(relative);
play.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//add the play intent here
dialog.dismiss();
}
});
done.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dialog.dismiss();
}
});
dialog.show();
}
});
我正在获取NullPointerException
rn.setText(homeItem.getHomeItemRedName()+"");
请说明如何将文本设置为对话框。
尝试首先显示对话框,例如,在尝试找到textViews之前,先放置dialog.show。 要么,要么先给视图充气,然后将视图传递给对话框。 您现在正在做的是尝试在放大之前查找视图。
编辑:要使用充气机,请尝试此操作,
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
RelativeLayout view = (RelativeLayout)inflater.inflate(R.layout.custom_dialog, null, false);
TextView rn = (TextView) view.findViewById(R.id.tvRName);
dialog.setContentView(view);
编辑2:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
HomeItem homeItem = (HomeItem) adapter.getItem(position);
final Dialog dialog = new Dialog(databaseFightCard.this, android.R.style.Theme_Black_NoTitleBar_Fullscreen);
WindowManager.LayoutParams lp = (dialog.getWindow().getAttributes());
lp.dimAmount = 0.5f;
dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
Window window = dialog.getWindow();
window.setGravity(Gravity.CENTER);
LayoutInflater inflater = (LayoutInflater) databaseFightCard.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
RelativeLayout relative = (RelativeLayout) inflater.inflate(R.layout.custom_dialog, null, false);
dialog.setContentView(relative);
Button play = (Button) relative.findViewById(R.id.bPlay);
Button done = (Button) relative.findViewById(R.id.bDone);
TextView rn = (TextView) relative.findViewById(R.id.tvRName);
TextView ra = (TextView) relative.findViewById(R.id.tvRAge);
TextView rr = (TextView) relative.findViewById(R.id.tvRRecord);
TextView rh = (TextView) relative.findViewById(R.id.tvRHeight);
TextView rw = (TextView) relative.findViewById(R.id.tvRWeight);
TextView rc = (TextView) relative.findViewById(R.id.tvRCity);
TextView re = (TextView) relative.findViewById(R.id.tvRExp);
TextView bn = (TextView) relative.findViewById(R.id.tvBName);
TextView ba = (TextView) relative.findViewById(R.id.tvBAge);
TextView br = (TextView) relative.findViewById(R.id.tvBRecord);
TextView bh = (TextView) relative.findViewById(R.id.tvBHeight);
TextView bw = (TextView) relative.findViewById(R.id.tvBWeight);
TextView bc = (TextView) relative.findViewById(R.id.tvBCity);
TextView be = (TextView) relative.findViewById(R.id.tvBExp);
rn.setText(homeItem.getHomeItemRedName()+"");
ra.setText(homeItem.getHomeItemRedAge()+"");
rr.setText(homeItem.getHomeItemRedRecord()+"");
rh.setText(homeItem.getHomeItemRedHeight()+"");
rw.setText(homeItem.getHomeItemRedWeight()+"");
rc.setText(homeItem.getHomeItemRedCity()+"");
re.setText(homeItem.getHomeItemRedExp()+"");
bn.setText(homeItem.getHomeItemBlueName()+"");
ba.setText(homeItem.getHomeItemBlueAge()+"");
br.setText(homeItem.getHomeItemBlueRecord()+"");
bh.setText(homeItem.getHomeItemBlueHeight()+"");
bw.setText(homeItem.getHomeItemBlueWeight()+"");
bc.setText(homeItem.getHomeItemBlueCity()+"");
be.setText(homeItem.getHomeItemBlueExp()+"");
dialog.setContentView(relative);
play.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//add the play intent here
dialog.dismiss();
}
});
done.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
dialog.dismiss();
}
});
dialog.show();
}
});
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