改变字体大小

来源：互联网发布：李斯特改编知乎编辑：程序博客网时间：2024/04/26 16:22
public class MyApp extends Application{    public static int fontInt = 0;    public  static Context context;    @Override    public void onCreate() {        super.onCreate();        context = getApplicationContext();        //初始化        x.Ext.init(this);        //提高性能        x.Ext.setDebug(false);          }    /**     * 得到上下文     * @return     */    public  static  Context getContext(){        return context;    }}//点击进行选择，弹出对话框//显示改变字体对话框private void showDialg() {    final AlertDialog.Builder builder = new AlertDialog.Builder(this);    View view = View.inflate(this, R.layout.setting_dialog, null);    CheckBox setting_dialog_small = (CheckBox) view.findViewById(R.id.setting_dialog_small);    CheckBox setting_dialog_middle = (CheckBox) view.findViewById(R.id.setting_dialog_middle);    CheckBox setting_dialog_big = (CheckBox) view.findViewById(R.id.setting_dialog_big);    TextView setting_dialog_quTv = (TextView) view.findViewById(R.id.setting_dialog_quTv);    builder.setView(view);    final AlertDialog dialog = builder.show();    setting_dialog_quTv.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View view) {            dialog.dismiss();        }    });    setting_dialog_small.setChecked(true);    if (MyApp.fontInt == 1) {        setting_dialog_small.setChecked(true);        setting_dialog_middle.setChecked(false);        setting_dialog_big.setChecked(false);    } else if (MyApp.fontInt == 2) {        setting_dialog_middle.setChecked(true);        setting_dialog_small.setChecked(false);        setting_dialog_big.setChecked(false);    } else if (MyApp.fontInt == 3) {        setting_dialog_big.setChecked(true);        setting_dialog_small.setChecked(false);        setting_dialog_middle.setChecked(false);    }    //小字体    setting_dialog_small.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {        @Override        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {            if (b) {                MyApp.fontInt = 1;                Toast.makeText(SheZhi_demo.this, "改变完成", Toast.LENGTH_SHORT).show();                dialog.dismiss();            }        }    });    //中号    setting_dialog_middle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {        @Override        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {            if (b) {                MyApp.fontInt = 2;                Toast.makeText(SheZhi_demo.this, "改变完成", Toast.LENGTH_SHORT).show();                dialog.dismiss();            }        }    });    //大号    setting_dialog_big.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {        @Override        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {            if (b) {                MyApp.fontInt = 3;                Toast.makeText(SheZhi_demo.this, "改变完成", Toast.LENGTH_SHORT).show();                dialog.dismiss();            }        }    });}
//写一个根据手机的分辨率dp的单位转换为px方法，进行适配调用
public class Ziti_demo {    /**     * 根据手机的分辨率dp的单位转为px(像素)     * @param px     * @return     */   public static int px2dip(int px) {        //获取像素密度        float density = MyApp.getContext().getResources().getDisplayMetrics().density;        int dip = (int) (px / density + 0.5f);        return dip;    }}
//进行数据适配。判断选中的数字进行修改字体大小
if(MyApp.fontInt == 1){    holder1.text_item1_name.setTextSize(Ziti_demo.px2dip(15));}else if(MyApp.fontInt == 2){    holder1.text_item1_name.setTextSize(Ziti_demo.px2dip(20));}else if(MyApp.fontInt == 3){    holder1.text_item1_name.setTextSize(Ziti_demo.px2dip(30));}
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